{"id":214,"date":"2023-08-18T18:04:49","date_gmt":"2023-08-18T10:04:49","guid":{"rendered":"http:\/\/blog.xjfvps.top\/index.php\/2023\/08\/18\/%e3%80%8ac%e5%a4%a7%e5%ad%a6%e6%95%99%e7%a8%8b%e3%80%8b%e8%af%bb%e4%b9%a6%e7%ac%94%e8%ae%b0%ef%bc%8811%e7%ab%a0-%e8%be%93%e5%85%a5%e8%be%93%e5%87%ba%e6%b5%81%ef%bc%89\/"},"modified":"2023-08-18T21:25:32","modified_gmt":"2023-08-18T13:25:32","slug":"%e3%80%8ac%e5%a4%a7%e5%ad%a6%e6%95%99%e7%a8%8b%e3%80%8b%e8%af%bb%e4%b9%a6%e7%ac%94%e8%ae%b0%ef%bc%8811%e7%ab%a0-%e8%be%93%e5%85%a5%e8%be%93%e5%87%ba%e6%b5%81%ef%bc%89","status":"publish","type":"post","link":"https:\/\/blog.fs.cloudns.biz\/index.php\/2023\/08\/18\/%e3%80%8ac%e5%a4%a7%e5%ad%a6%e6%95%99%e7%a8%8b%e3%80%8b%e8%af%bb%e4%b9%a6%e7%ac%94%e8%ae%b0%ef%bc%8811%e7%ab%a0-%e8%be%93%e5%85%a5%e8%be%93%e5%87%ba%e6%b5%81%ef%bc%89\/","title":{"rendered":"\u300ac++\u5927\u5b66\u6559\u7a0b\u300b\u8bfb\u4e66\u7b14\u8bb0\uff0811\u7ae0 \u8f93\u5165\u8f93\u51fa\u6d41\uff09"},"content":{"rendered":"

 
\n

1<\/SPAN>\uff0e<\/SPAN>cin<\/SPAN>\u3001<\/SPAN>cin.get()<\/SPAN>\u3001<\/SPAN>cin.getline()<\/SPAN><\/P>
\n

cin: <\/SPAN>\u8f93\u5165\u4e00\u7cfb\u5217\u5b57\u7b26\uff0c\u5176\u4e2d\u81ea\u52a8\u7565\u8fc7\u7a7a\u683c\u3001<\/SPAN>tab<\/SPAN>\u3001\u6362\u884c\u7b26\u7b49\u7a7a\u767d\u7b26\u3002\u9047\u5230\u6587\u4ef6\u7ed3\u675f\u7b26\u65f6\u8fd4\u56de<\/SPAN>0<\/SPAN>\uff0c\u4f46\u5e76\u4e0d\u628a\u8fd9\u4e2a<\/SPAN>0<\/SPAN>\u503c\u653e\u5230\u8f93\u5165\u5bf9\u8c61\u4e2d\u3002<\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

cin.get(): <\/SPAN>\u63a5\u6536\u4e00\u4e2a\u8f93\u5165\u5b57\u7b26\uff08\u5305\u62ec\u7a7a\u767d\u7b26\uff09\uff0c\u8fd4\u56de\u8be5\u5b57\u7b26\u503c\uff0c\u9047\u5230\u6587\u4ef6\u7ed3\u675f\u7b26\u65f6\uff0c\u8fd4\u56de<\/SPAN>EOF<\/SPAN>\uff08\u5373\u8fd9\u4e2a\u6587\u4ef6\u7ed3\u675f\u7b26\uff09\u3002<\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n


\n

<\/o:p><\/SPAN><\/P>
\n

<\/SPAN><\/o:p><\/SPAN><\/B><\/P> <\/o:p><\/SPAN><\/B>
\n

<\/P>
\n

2.peek<\/SPAN>\u3001<\/SPAN>putback<\/SPAN>\u3001<\/SPAN>ignore<\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

ignore<\/o:p><\/SPAN><\/B><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

int main()<\/o:p><\/SPAN><\/P>
\n

{<\/o:p><\/SPAN><\/P>
\n

       <\/SPAN>char buf[30];<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

       <\/SPAN>cout<<“enter a sentence: n”;<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

       <\/SPAN>cin.ignore();<\/o:p><\/SPAN><\/P>
\n

       <\/SPAN>cin.getline(buf,30);<\/o:p><\/SPAN><\/P>
\n

       <\/SPAN>cout<<buf<<endl;<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

}<\/o:p><\/SPAN><\/P>
\n

\u8f93\u5165\u8f93\u51fa\u60c5\u51b5\uff1a<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

enter a sentence:<\/o:p><\/SPAN><\/B><\/P>
\n

rtt<\/o:p><\/SPAN><\/B><\/P>
\n

tt<\/o:p><\/SPAN><\/B><\/P>
\n

\u53bb\u6389\u4e86\u8f93\u5165\u6d41\u4e2d\u7b2c\u4e00\u4e2a\u5b57\u7b26\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

putback<\/o:p><\/SPAN><\/B><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <ctype.h><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

int main()<\/o:p><\/SPAN><\/B><\/P>
\n

{<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>char c,buf[30];<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>int i=0;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<“enter a sentence: n”;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>c=cin.get();<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>if( isdigit(c)) <\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>  <\/SPAN>cin.putback(c);<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

cin.getline(buf,30);<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<buf<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

}<\/o:p><\/SPAN><\/B><\/P>
\n

\u8f93\u5165\u8f93\u51fa\u60c5\u51b5\uff1a<\/SPAN><\/o:p><\/SPAN><\/P>
\n

1<\/SPAN><\/B>\uff09<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

enter a sentence:<\/o:p><\/SPAN><\/B><\/P>
\n

rtt<\/o:p><\/SPAN><\/B><\/P>
\n

tt<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

2<\/SPAN><\/B>\uff09<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

enter a sentence:<\/o:p><\/SPAN><\/B><\/P>
\n

6tt<\/o:p><\/SPAN><\/B><\/P>
\n

6tt<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u53ef\u89c1\uff0c\u5f53\u8f93\u5165\u7b2c\u4e00\u4e2a\u662f\u6570\u5b57\u65f6\u5c06\u538b\u56de\u8f93\u5165\u6d41\uff0c\u7531<\/SPAN>getline<\/SPAN>\u518d\u63a5\u6536\u3002\u4f46<\/SPAN>putback<\/SPAN>\u597d\u50cf\u53ea\u80fd\u5904\u7406\u6700\u540e\u4e00\u4e2a<\/SPAN>get<\/SPAN>\u7684\u5b57\u7b26\uff0c\u800c\u4e0d\u80fd\u7528\u4e8e<\/SPAN>get<\/SPAN>\u5728<\/SPAN>while<\/SPAN>\u5faa\u73af\u4f53\u4e2d\u7684\u60c5\u51b5\u3002<\/SPAN>Msdn<\/SPAN>\u8bf4\uff0c\u5982\u679c\u538b\u56de\u53bb\u7684\u5b57\u7b26\u4e0d\u662f\u521a\u521a\u4ece<\/SPAN>get<\/SPAN>\u83b7\u5f97\u7684\uff0c\u800c\u662f\u5176\u4ed6\u5b57\u7b26\u65f6\uff0c\u7ed3\u679c\u5c06\u662f\u672a\u5b9a\u4e49\u7684\u3002\u4f46\u521d\u6b65\u9a8c\u8bc1\uff0c\u538b\u56de\u5176\u4ed6\u5b57\u7b26\u65f6\u4e5f\u80fd\u6b63\u786e\u7684\u7528<\/SPAN>get<\/SPAN>\u518d\u53d6\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

Peek<\/o:p><\/SPAN><\/B><\/P>
\n

\u63a5\u6536\u4e00\u4e2a\u5b57\u7b26\uff0c\u5e76\u628a\u591a\u4f59\u8f93\u5165\u9664\u6362\u884c\u7b26\u5916\u90fd\u663e\u793a\u51fa\u6765<\/SPAN><\/o:p><\/SPAN><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <ctype.h><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

int main()<\/o:p><\/SPAN><\/B><\/P>
\n

{<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>char c,p;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<“enter a sentence: n”;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cin>>c;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<c;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>while(cin.peek() != ‘n’)<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN>cout<<(p=cin.get());<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

}<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

enter a sentence:<\/o:p><\/SPAN><\/B><\/P>
\n

i am happy<\/o:p><\/SPAN><\/B><\/P>
\n

i am happy<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

read<\/o:p><\/SPAN><\/B><\/P>
\n

\u63a5\u6536\u6307\u5b9a\u6570\u76ee\u7684\u5b57\u7b26\u5230\u6570\u7ec4\u4e2d\uff08\u53ef\u8bfb\u5165\u7a7a\u767d\u7b26\uff09\uff0c\u63d0\u524d\u7ed3\u675f\u7684\u8bdd\u8f93\u5165\u6587\u4ef6\u7ed3\u675f\u7b26\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

gcount<\/o:p><\/SPAN><\/B><\/P>
\n

\u7edf\u8ba1\u521a\u624d\u7528<\/SPAN>read<\/SPAN>\u8bfb\u5165\u7684\u5b57\u7b26\u6570\u76ee\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <ctype.h><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

int main()<\/o:p><\/SPAN><\/B><\/P>
\n

{<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>const int SIZE = 80;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>char buf[SIZE];<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<“Enter a sentence:n”;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cin.read(buf,20);<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<“The sentence entered was :n”;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout.write(buf,cin.gcount());<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

}<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

Write<\/o:p><\/SPAN><\/B><\/P>
\n

\u4ece\u6570\u7ec4\u4e2d\u8f93\u51fa\u6307\u5b9a\u6570\u76ee\u7684\u5b57\u7b26\uff0c\u82e5\u8fd9\u4e2a\u6570\u76ee\u5927\u4e8e\u6570\u7ec4\u957f\u5ea6\uff0c\u5219\u8f93\u51fa\u6574\u4e2a\u6570\u7ec4\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <ctype.h><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

int main()<\/o:p><\/SPAN><\/B><\/P>
\n

{<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout.write(“abc”,10);<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

}<\/o:p><\/SPAN><\/B><\/P>
\n

\u8f93\u51fa\uff1a<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

abc<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u6574\u6570\u7684\u57fa\u6570\uff1a<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

Dec(<\/SPAN><\/B>\u5341\u8fdb\u5236<\/SPAN><\/B>)<\/o:p><\/SPAN><\/B><\/P>
\n

Oct(<\/SPAN><\/B>\u516b\u8fdb\u5236<\/SPAN><\/B>)<\/o:p><\/SPAN><\/B><\/P>
\n

Hex(<\/SPAN><\/B>\u5341\u516d\u8fdb\u5236<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u8bbe\u7f6e\u57fa\u6570\u7684\u51fd\u6570<\/SPAN> setbase(int n) ,n<\/SPAN><\/B>\u53ef\u4ee5\u662f<\/SPAN>10<\/SPAN><\/B>\u3001<\/SPAN>8<\/SPAN><\/B>\u3001\u6216<\/SPAN>16<\/SPAN><\/B>\u3002<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

\u5982\u679c\u4e0d\u660e\u786e\u7684\u6539\u53d8\u6d41\u7684\u57fa\u6570\uff0c\u6d41\u7684\u57fa\u6570\u662f\u4e0d\u53d8\u7684\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u8bbe\u7f6e\u6d6e\u70b9\u6570\u7cbe\u5ea6\uff1a<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

setprecision <\/SPAN><\/B>\uff08\u5fc5\u987b\u5e26\u53c2\u6570\uff09<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

precision <\/SPAN><\/B>\uff08\u65e0\u53c2\u6570\u65f6\u8fd4\u56de\u5f53\u524d\u8bbe\u7f6e\u7684\u7cbe\u5ea6\uff09<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

\u8bbe\u7f6e\u540e\uff0c\u5bf9\u4ee5\u540e\u7684\u8f93\u51fa\u90fd\u6709\u6548\u3002<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <ctype.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <iomanip.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <math.h><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

int main()<\/o:p><\/SPAN><\/B><\/P>
\n

{<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>double root2=sqrt(2.0);<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>int place;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<setiosflags(ios ::fixed)<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN><<“Square root of 2 with precisions 0-9n”<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN><<“precision se by the “<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN><<“precision member function:”<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>for(place=0; place<=9; place++)<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>{<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN>cout.precision(place);<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>    <\/SPAN>cout<<root2<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>}<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<“precision now is: “<<cout.precision()<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>for(place=0; place<=9; place++)<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>{<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN>cout<<setprecision(place)<<root2<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>}<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

\/\/     <\/SPAN>cout<<“precision now is: “<<setprecision()<<endl;  <\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

}<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

\u8bbe\u7f6e\u57df\u5bbd<\/SPAN><\/o:p><\/SPAN><\/P>
\n

\u5982\u679c\u6240\u9700\u7684\u5bbd\u5ea6\u6bd4\u8bbe\u7f6e\u7684\u57df\u5bbd\u5c0f\uff0c\u7a7a\u4f4d\u7528\u586b\u5145\u5b57\u7b26\u586b\u5145\u3002\u5982\u679c\u663e\u793a\u6570\u636e\u6240\u9700\u7684\u5bbd\u5ea6\u6bd4\u8bbe\u7f6e\u7684\u57df\u5bbd\u5927\uff0c\u7cfb\u7edf\u8f93\u51fa\u6240\u6709\u4f4d\u3002\u57df\u5bbd\u8bbe\u7f6e\u4ec5\u5bf9\u4e0b\u4e00\u884c\u6d41\u8bfb\u5165\u6216\u6d41\u63d2\u5165\u6284\u505a\u6709\u6548\uff0c\u5728\u4e00\u6b21\u64cd\u4f5c\u5b8c\u540e\u88ab\u7f6e<\/SPAN>0<\/SPAN>\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

Setw<\/o:p><\/SPAN><\/P>
\n

Width<\/SPAN>\uff1a<\/SPAN>\u8f93\u5165\u64cd\u4f5c\u63d0\u53d6\u5b57\u7b26\u4e32\u7684\u6700\u5927\u5bbd\u5ea6\u6bd4\u5b9a\u4e49\u7684\u57df\u5bbd\u5c0f<\/SPAN>1<\/SPAN>\uff0c\u8fd9\u662f\u56e0\u4e3a\u5728\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u540e\u9762\u5fc5\u987b\u52a0\u4e0a\u4e00\u4e2a\u7a7a\u5b57\u7b26\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <ctype.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <iomanip.h><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

int main()<\/o:p><\/SPAN><\/B><\/P>
\n

{<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>int w=4;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>char str[10];<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<“Enter a sentence:n”;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cin.width(5); \/\/<\/SPAN><\/B>\u6bcf\u6b21\u53ea\u63a5\u6536<\/SPAN>4<\/SPAN><\/B>\u4e2a\u5b57\u7b26\uff0c\u5176\u4ed6\u7684\u653e\u5728\u6d41\u4e2d\u7b49\u5f85\u63a5\u6536\u3002<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>while( cin>> str )<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>{<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN>cout.width(w++); \/\/<\/SPAN><\/B>\u5c06<\/SPAN>4<\/SPAN><\/B>\u4e2a\u5b57\u7b26\u8f93\u51fa\uff0c\u8bbe\u7f6e\u6bcf\u6b21\u8f93\u51fa\u7684\u57df\u5bbd\u589e\u52a0<\/SPAN>1<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN>cout<<str<<endl; \/\/<\/SPAN><\/B>\u8f93\u51fa\u5b57\u7b26<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN>cin.width(5);    <\/SPAN>\/\/<\/SPAN><\/B>\u8bbe\u7f6e\u63a5\u6536<\/SPAN>4<\/SPAN><\/B>\u4e2a\u5b57\u7b26<\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>}<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

}<\/o:p><\/SPAN><\/B><\/P>
\n

\u8f93\u5165\u8f93\u51fa\u60c5\u51b5\uff1a<\/SPAN><\/o:p><\/SPAN><\/P>
\n

Enter a sentence:<\/o:p><\/SPAN><\/B><\/P>
\n

happy new year<\/o:p><\/SPAN><\/B><\/P>
\n

happ<\/o:p><\/SPAN><\/B><\/P>
\n

    <\/SPAN>y<\/o:p><\/SPAN><\/B><\/P>
\n

   <\/SPAN>new<\/o:p><\/SPAN><\/B><\/P>
\n

   <\/SPAN>year<\/o:p><\/SPAN><\/B><\/P>
\n

^Z<\/o:p><\/SPAN><\/B><\/P>
\n

\u5148\u8f93\u51fa<\/SPAN>happ<\/SPAN>\uff08\u56db\u4e2a\u5b57\u7b26\uff09\uff0c<\/SPAN>y<\/SPAN>\u7559\u5728\u4e0b\u4e00\u6b21\u3002\u9047\u5230\u7a7a\u683c\u63a5\u6536\u7ed3\u675f\uff0c\u7b2c\u4e8c\u6b21\u53ea\u6709<\/SPAN>y<\/SPAN>\uff0c\u5230<\/SPAN>y<\/SPAN>\u8f93\u51fa\u65f6\uff0c\u8f93\u51fa\u57df\u5bbd\u662f<\/SPAN>5<\/SPAN>\u3002\u4e0b\u4e00\u4e2a\u63a5\u6536\u7684\u662f<\/SPAN>new<\/SPAN>\uff08\u540e\u9762\u7684\u7a7a\u683c\u65ad\u5f00\u4e86\u63a5\u6536\uff09\uff0c……<\/SPAN><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u5bf9\u9f50\uff08<\/SPAN><\/B>ios::left,ios::right,ios::internal<\/SPAN><\/B>\uff09<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

\u9ed8\u8ba4\u662f\u53f3\u5bf9\u9f50<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

Internal: <\/SPAN>\u6807\u793a\u4e00\u4e2a\u6570\u7684\u7b26\u53f7\u4f4d\u5de6\u5bf9\u9f50\uff0c\u6570\u503c\u53f3\u5bf9\u9f50\u3002<\/SPAN><\/P>
\n

\u8bbe\u7f6e<\/SPAN>left<\/SPAN>\u3001<\/SPAN>right<\/SPAN>\u3001<\/SPAN>internal<\/SPAN>\u65f6\uff0c<\/SPAN>setf<\/SPAN>\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u5fc5\u987b\u662f<\/SPAN>ios::adjustfield<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u8bbe\u7f6e\u586b\u5145\u5b57\u7b26\uff08<\/SPAN><\/B> fill<\/SPAN><\/B>\u3001<\/SPAN><\/B>setfill<\/SPAN><\/B>\uff09<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

\u7a7a\u683c\u662f\u9ed8\u8ba4\u7684\u586b\u5145\u5b57\u7b26\u3002<\/SPAN>Fill<\/SPAN>\u51fd\u6570\u8fd4\u56de\u4ee5\u524d\u8bbe\u7f6e\u7684\u586b\u5145\u5b57\u7b26\u3002<\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u6574\u6570\u6d41\u7684\u57fa\u6570\uff08<\/SPAN><\/B> ios::dec ios::oct  <\/SPAN>ios::hex   <\/SPAN>ios::showbase<\/SPAN><\/B>\uff09<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

Showbase<\/SPAN>\u5f3a\u5236\u8f93\u51fa\u6574\u6570\u503c\u7684\u57fa\u6570\u3002<\/SPAN>ios::uppercase <\/SPAN>\u51b3\u5b9a\u662f<\/SPAN>0x<\/SPAN>\u8fd8\u662f<\/SPAN>0X<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

#include <iostream.h><\/o:p><\/SPAN><\/B><\/P>
\n

#include <iomanip.h><\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/B><\/P>
\n

int main()<\/o:p><\/SPAN><\/B><\/P>
\n

{<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>int x=100;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN><\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>cout<<setiosflags(ios::showbase | ios::uppercase)<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN><<x<<‘n’<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN><<oct<<x<<‘n’<\/o:p><\/SPAN><\/B><\/P>
\n

              <\/SPAN><<hex<<x<<endl;<\/o:p><\/SPAN><\/B><\/P>
\n

       <\/SPAN>return 0;<\/o:p><\/SPAN><\/B><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

}<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u6d6e\u70b9\u6570\u548c\u79d1\u5b66\u8bb0\u6570\u6cd5\uff08<\/SPAN><\/B> ios::scientific  <\/SPAN>ios::fixed<\/SPAN><\/B>\uff09<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

secientific<\/SPAN>\u6807\u5fd7\u4f7f\u6d6e\u70b9\u6570\u6309\u79d1\u5b66\u8bb0\u6570\u6cd5\u8f93\u51fa\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

fixed<\/SPAN>\u6807\u5fd7\u4f7f\u6d6e\u70b9\u6570\u6309\u7167\u5b9a\u70b9\u683c\u5f0f\u8f93\u51fa\uff0c\u663e\u793a\u5c0f\u6570\u70b9\u53ca\u540e\u9762\u7684\u4f4d\u6570\uff08\u4f4d\u6570\u7684\u6307\u5b9a\u7531<\/SPAN>precision<\/SPAN>\u51b3\u5b9a\uff0c\u82e5\u6ca1\u8bbe\u7f6e\uff0c\u5219\u6309\u9ed8\u8ba4\uff0d\u5c0f\u6570\u540e<\/SPAN>6<\/SPAN>\u4f4d\uff09\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u8bbe\u7f6e\u53ca\u6e05\u9664\u683c\u5f0f\u6807\u5fd7\uff08<\/SPAN> flags  <\/SPAN>setiosflags  <\/SPAN>resetiosflags<\/SPAN>\uff09<\/SPAN><\/o:p><\/SPAN><\/P>
\n

\u65e0\u53c2\u6570\u7684<\/SPAN>flags<\/SPAN>\u53ea\u8fd4\u56de\u683c\u5f0f\u6807\u5fd7\u7684\u5f53\u524d\u8bbe\u7f6e\uff08<\/SPAN>long<\/SPAN>\u578b\uff09\u3002\u5e26\u4e00\u4e2a<\/SPAN>long<\/SPAN>\u53c2\u6570\u7684<\/SPAN>flags<\/SPAN>\u6309\u53c2\u6570\u7684\u6307\u5b9a\u683c\u5f0f\u8bbe\u7f6e\u6807\u5fd7\uff0c\u8fd4\u56de\u4ee5\u524d\u7684\u6807\u5fd7\u8bbe\u7f6e\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

cout<\/SPAN>\u7684<\/SPAN>setf<\/SPAN>\u6210\u5458\u51fd\u6570\u6709\u4e24\u79cd\u5199\u6cd5\uff1a<\/SPAN><\/o:p><\/SPAN><\/P>
\n

1\uff0e  <\/SPAN><\/SPAN><\/SPAN>cout.setf(long)<\/o:p><\/SPAN><\/P>
\n

2\uff0e  <\/SPAN><\/SPAN><\/SPAN>cout.setf(long  <\/SPAN>a, long  <\/SPAN>b)<\/o:p><\/SPAN><\/P>
\n

\u82e5<\/SPAN>a<\/SPAN>\u662f<\/SPAN>ios::left ios::right  <\/SPAN>ios::internal <\/SPAN>\u90a3\u4e48<\/SPAN>b<\/SPAN>\u5bf9\u5e94<\/SPAN>ios::adjustfield<\/o:p><\/SPAN><\/P>
\n

\u82e5<\/SPAN>a<\/SPAN>\u662f<\/SPAN>ios::oct  <\/SPAN>ios::hex  <\/SPAN>ios::dec    <\/SPAN>     <\/SPAN>b<\/SPAN>\u5bf9\u5e94<\/SPAN> ios::basefield<\/o:p><\/SPAN><\/P>
\n

\u82e5<\/SPAN>a<\/SPAN>\u662f<\/SPAN>ios::scientific   <\/SPAN>ios::fixed    <\/SPAN>      <\/SPAN>b<\/SPAN>\u5bf9\u5e94<\/SPAN> ios::floatfield<\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P>
\n

\u9519\u8bef\u6d41\u72b6\u6001<\/SPAN><\/B><\/o:p><\/SPAN><\/B><\/P>
\n

\u5f53\u6d41\u4e2d\u53d1\u751f\u683c\u5f0f\u9519\u8bef\u65f6\uff0c\u8bbe\u7f6e<\/SPAN>failbit<\/o:p><\/SPAN><\/P>
\n

\u5f53\u53d1\u751f\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u9519\u8bef\u65f6\uff0c\u8bbe\u7f6e<\/SPAN>badbit<\/o:p><\/SPAN><\/P>
\n

\u5982\u679c<\/SPAN>eofbit<\/SPAN>\u3001<\/SPAN>failbit<\/SPAN>\u3001<\/SPAN>badbit<\/SPAN>\u90fd\u6ca1\u6709\u8bbe\u7f6e\uff0c\u5219\u8bbe\u7f6e<\/SPAN>goodbit<\/o:p><\/SPAN><\/P>
\n

\u6210\u5458\u51fd\u6570<\/SPAN>rdstate<\/SPAN>\u8fd4\u56de\u6d41\u7684\u9519\u8bef\u72b6\u6001\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

\u6210\u5458\u51fd\u6570<\/SPAN>clear<\/SPAN>\u628a\u4e00\u4e2a\u6d41\u7684\u72b6\u6001\u6062\u590d\u4e3a“\u597d”\uff0c\u5982\uff1a<\/SPAN><\/o:p><\/SPAN><\/P>
\n

cin.clear()<\/o:p><\/SPAN><\/P>
\n

\u6e05\u9664<\/SPAN>cin<\/SPAN>\uff0c\u5e76\u4e3a\u6d41\u8bbe\u7f6e<\/SPAN>goodbit<\/SPAN>\u3002<\/SPAN><\/o:p><\/SPAN><\/P>
\n

 <\/o:p><\/SPAN><\/P><\/p>\n","protected":false},"excerpt":{"rendered":"

  1\uff0ecin\u3001cin.get()\u3001cin.getline() cin … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,8,1],"tags":[14],"class_list":["post-214","post","type-post","status-publish","format-standard","hentry","category-c","category-8","category-uncategorized","tag-c"],"_links":{"self":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts\/214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/comments?post=214"}],"version-history":[{"count":1,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts\/214\/revisions"}],"predecessor-version":[{"id":341,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts\/214\/revisions\/341"}],"wp:attachment":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/media?parent=214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/categories?post=214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/tags?post=214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}