C库函数 - atol()

#include <stdio.h>

#include <stdlib.h>

#include <string.h>



int main () {

   long val;

   char str[20];



   strcpy(str, "98993489");

   val = atol(str);

   printf("String value = %s, Long value = %ld\n", str, val);



   strcpy(str, "codingdict.com");

   val = atol(str);

   printf("String value = %s, Long value = %ld\n", str, val);



   return(0);

}