如何将float转换为string

可能有好多人，包括C语言老手都不知道如何将float数据转换为string，我就是这样，今天查了一下MSDN，才知道C提供了_gcvt函数实现这个功能，收获着实不小，为了方便自己查询，也为了那些像我这样的网友能够了解该函数的具体用法，我把MSDN的原文原封不动抄录如下：

_gcvt

Converts a floating-point value to a string, which it stores in a buffer.

char *_gcvt( double value, int digits, char *buffer );

Routine	Required Header	Compatibility
_gcvt		Win 95, Win NT

Example

/* _GCVT.C: This program converts -3.1415e5 * to its string representation. 
*/
#include 
#include 
void main( void )
{   
	char buffer[50];   
	double source = -3.1415e5;   
	_gcvt( source, 7, buffer );   
	printf( "source: %f  buffer: '%s'\n", source, buffer );  
	 _gcvt( source, 7, buffer );   
	printf( "source: %e  buffer: '%s'\n", source, buffer );
}

Output

source: -314150.000000  buffer: '-314150.'source: -3.141500e+005  buffer: '-314150.'