将Int、Double转化成std::string(转)

将Int、Double转化成std::string

CString中可以使用Format

转:http://hi.baidu.com/minyuanyang/blog/item/84a76cf0ca9486c87831aaf2.html

#include "stdafx.h"

#include
#include
#include

template

std::string ConvertToString(T);

 

int main() {
 std::string s;

 

// Convert int to std::string
 int i = 123;
 s = ConvertToString(i);
 std::cout << s << std::endl;

 

 // Convert double to std::string
 double d = 123.123;
 s = ConvertToString(d);
 std::cout << s << std::endl;
 getchar();
 return 0;
}

 

template
std::string ConvertToString(T value) {
 std::stringstream ss;
 ss << value;
 return ss.str();
}

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加MSDN上的例子

#include
void main( void )
{
   char  buffer[200], s[] = "computer", c = 'l';
   int   i = 35, j;
   float fp = 1.7320534f;

   /* Format and print various data: */
   j  = sprintf( buffer,     "\tString:    %s\n", s );
   j += sprintf( buffer + j, "\tCharacter: %c\n", c );
   j += sprintf( buffer + j, "\tInteger:   %d\n", i );
   j += sprintf( buffer + j, "\tReal:      %f\n", fp );

   printf( "Output:\n%s\ncharacter count = %d\n", buffer, j );
}
Output:
String:    computer
Character: l
   Integer:   35
   Real:      1.732053

character count = 71