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Program Discussion :: Basics
Home > Programs > Basics

316. Write a program using command line argument to input one number and print the Factorial of the number. 

Answer:

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char * argv[])
{
    int  fact = 1,c = 0, num = 0;
    if(argc == 1 || argc > 2)
    {
         printf("Enter the number \n");
         exit(1);
    }
    num = atoi(argv[1]);
    for (c = 1; c <= num ; c++)
        fact *= c;

  printf("Factorial of %d = %d\n", num, fact);

return 0;
}

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