C库函数 - atof()

#include <stdio.h>

#include <stdlib.h>

#include <string.h>



int main () {

   float val;

   char str[20];



   strcpy(str, "98993489");

   val = atof(str);

   printf("String value = %s, Float value = %f\n", str, val);



   strcpy(str, "codingdict.com");

   val = atof(str);

   printf("String value = %s, Float value = %f\n", str, val);



   return(0);

}