1,cout<<boolalpha<<(2>3)<<endl;输出什么?
Dev c++上输出false,VC++输出0,why?
2,
我机子上的VC6.0上编译通不过,可Dev C++可以运行,why?
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->#include<fstream>
usingnamespacestd;
intmain()
{
ifstreamin("F://data.txt");
ofstreamout("F://a.txt");
for(stringstr;getline(in,str);)
out<<str<<endl;
return0;
}
usingnamespacestd;
intmain()
{
ifstreamin("F://data.txt");
ofstreamout("F://a.txt");
for(stringstr;getline(in,str);)
out<<str<<endl;
return0;
}
3,
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->#include<iostream>
usingnamespacestd;
voidOutPutLine(introw)
{
inti;
for(i=4-row;i>0;i--)
cout<<"";
for(i=2*row-1;i>0;i--)
cout<<"*";
cout<<endl;
}
intmain()
{
inti;
for(i=1;i<=4;i++)
OutPutLine(i);
for(i=3;i>=1;i--)
OutPutLine(i);
return0;
}
usingnamespacestd;
voidOutPutLine(introw)
{
inti;
for(i=4-row;i>0;i--)
cout<<"";
for(i=2*row-1;i>0;i--)
cout<<"*";
cout<<endl;
}
intmain()
{
inti;
for(i=1;i<=4;i++)
OutPutLine(i);
for(i=3;i>=1;i--)
OutPutLine(i);
return0;
}
4,
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->#include<iostream>
usingnamespacestd;
voidOutPutLine(introw)
{
inti;
for(i=1;i<=row-1;i++)
{
cout<<"";
}
for(i=1;i<=21-2*row;i++)
{
cout<<"M";
}
cout<<endl;
}
intmain()
{
for(inti=1;i<=10;i++)
{
OutPutLine(i);
}
return0;
}
5,usingnamespacestd;
voidOutPutLine(introw)
{
inti;
for(i=1;i<=row-1;i++)
{
cout<<"";
}
for(i=1;i<=21-2*row;i++)
{
cout<<"M";
}
cout<<endl;
}
intmain()
{
for(inti=1;i<=10;i++)
{
OutPutLine(i);
}
return0;
}
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->#include<iostream>
usingnamespacestd;
voidOutPutLine(introw)
{
inti;
charch='A';
for(i=1;i<=10-row;i++)
{
cout<<"";
}
for(i=1;i<=2*row-1;i++)
{
cout<<ch;
ch++;
}
cout<<endl;
}
intmain()
{
for(inti=1;i<=10;i++)
{
OutPutLine(i);
}
return0;
}
6,usingnamespacestd;
voidOutPutLine(introw)
{
inti;
charch='A';
for(i=1;i<=10-row;i++)
{
cout<<"";
}
for(i=1;i<=2*row-1;i++)
{
cout<<ch;
ch++;
}
cout<<endl;
}
intmain()
{
for(inti=1;i<=10;i++)
{
OutPutLine(i);
}
return0;
}
<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>-->/*筛法求素数*/
#include<iostream>
#include<vector>
usingnamespacestd;
constintLEN=101;
vector<int>b(LEN,1);
voidShaiSu()
{
inti,j;
for(i=2;i<LEN;i++)
{
if(b[i]==1)
{
for(j=2;i*j<LEN;j++)
{
b[i*j]=0;
}
}
}
}
voidOutPut()
{
inti;
for(i=2;i<len;i++)
{
if(b[i]==1)
{
cout<<i<<"是素数"<<endl;
}
}
}
intmain()
{
ShaiSu();
OutPut();
return0;
}
#include<iostream>
#include<vector>
usingnamespacestd;
constintLEN=101;
vector<int>b(LEN,1);
voidShaiSu()
{
inti,j;
for(i=2;i<LEN;i++)
{
if(b[i]==1)
{
for(j=2;i*j<LEN;j++)
{
b[i*j]=0;
}
}
}
}
voidOutPut()
{
inti;
for(i=2;i<len;i++)
{
if(b[i]==1)
{
cout<<i<<"是素数"<<endl;
}
}
}
intmain()
{
ShaiSu();
OutPut();
return0;
}