C库函数 - strtod()

#include <stdio.h>

#include <stdlib.h>



int main () { 

   char str[30] = "20.30300 This is test";

   char *ptr;

   double ret;



   ret = strtod(str, &ptr);

   printf("The number(double) is %lf\n", ret);

   printf("String part is |%s|", ptr);



   return(0);

}