C语言函数—ellipse

函数名

ecvt

功 能

把一个浮点数转换为字符串

用 法

char ecvt(double value, int ndigit, int *decpt, int *sign);

程序例

#include <stdlib.h> 
#include <stdio.h> 
#include <conio.h> 

int main(void) 
{ 
   char *string; 
   double value; 
   int dec, sign; 
   int ndig = 10; 

   clrscr(); 
   value = 9.876; 
   string = ecvt(value, ndig, &dec, &sign); 
   printf("string = %s      dec = %d  
   sign = %dn", string, dec, sign); 

   value = -123.45; 
   ndig= 15; 
   string = ecvt(value,ndig,&dec,&sign); 
   printf("string = %s dec = %d sign = %dn", 
   string, dec, sign); 
  

   value = 0.6789e5; /* scientific 
   notation */ 
   ndig = 5; 
   string = ecvt(value,ndig,&dec,&sign); 
   printf("string = %s           dec = %d 
   sign = %dn", string, dec, sign); 

   return 0; 
} 
  
  

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