Convert string to unsigned long integer: how to use strtoul : String Convert « String « C / ANSI-C

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Convert string to unsigned long integer: how to use strtoul





#include <stdio.h>

#include <stdlib.h>



int main ()

{

  char str[256];

  char *p;

  unsigned long ul;

  

  printf ("Enter an integer value: ");

  

  gets (str);

  

  ul = strtoul (str, &p, 0);

  

  printf ("Value entered: %lu. Its double: %lu\n", ul, ul * 2);

  

  return 0;

}

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