Pointer manipulation

Greetings,

I am writing a program that based around the command line input of a phone number (numbers only).

I understand that the number will be stored in char *argv[].
(i.e. argv[1])

I want check each digit in the phone number. How would I go about doing this?

for example:
a simple piece of code that will print each digit to stdout would suffice

thank you for your time

If argv[1] is a string, then argv[1][i] may be a character in the string.

Code:

---

#include <stdio.h>

int main (int argc, char *argv[])
{
  if ( argc > 1 )
  {
      int i;
      for ( i = 0; argv[1][i]; ++i )
      {
        printf("%c\n", argv[1][i]);
      }
  }
  return 0;
}

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sorry.... the PHONE NUMBER is an argument for the program

i.e.

programname 4588742

thank you

I tried that before but I put

Code:

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printf(argv[1][i]); // instead of

printf("%c\n",argv[1][i]);

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