Segmentation Error : Command Arguments (argv)

Question

#include
#include 
#include 
#include 
#include 
int main(int argc, string argv[])
{
  if (ar         


        

Answer 1

I believe the problem is in

 isdigit (argv[1])

argv[1] is of type char *, but isdigit() expects an int.

If you want to check whether the supplied argument is all-numerical value or not, you have to either

• Loop over the elements in argv[n] and pass them one by one to isdigit() check.
• use strtol() or similar to check for the validity.