String function strtol()

Declaration

Following is the declaration for strtol() function.

long int strtol(const char *str, char **endptr, int base)

·      str − This is the string containing the representation of an integral number.

·      endptr − This is the reference to an object of type char*, whose value is set by the function to the next character in str after the numerical value.

·      base − This is the base, which must be between 2 and 36 inclusive, or be the special value 0.

This function returns the converted integral number as a long int value, else zero value is returned.

Example

The following example shows the usage of strtol() function.

#include <stdio.h>

#include <stdlib.h>

int main () {

   char str[30] = "2030300 This is test";

   char *ptr;

   long ret;

   ret = strtol(str, &ptr, 10);

   printf("The number(unsigned long integer) is %ld\n", ret);

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

   return(0);

}

Let us compile and run the above program that will produce the following result −

The number(unsigned long integer) is 2030300

String part is | This is test|