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C Programming Exercises

C Exercises: Find the factorial of a given number

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C Pointer : Exercise-12 with Solution

Write a program in C to find the factorial of a given number using pointers.
Test Data :
Input a number : 5
Expected Output :

The Factorial of 5 is : 120 

C Code:

#include <stdio.h>
void findFact(int,int*);
int main()
{
         int fact;
         int num1;
		printf("\n\n Pointer : Find the factorial of a given number :\n"); 
		printf("------------------------------------------------------\n");	
		printf(" Input a number : ");
		scanf("%d",&num1);		 

         findFact(num1,&fact);
         printf(" The Factorial of %d is : %d \n\n",num1,fact);
         return 0;
        }

void findFact(int n,int *f)
		{
        int i;

       *f =1;
       for(i=1;i<=n;i++)
       *f=*f*i;
       }

Flowchart :

Flowchart: Find the factorial of a given number

C Practice online:


#include <stdio.h>
void findFact(int,int*);
int main()
{
         int fact;
         int num1;
		printf("\n\n Pointer : Find the factorial of a given number :\n"); 
		printf("------------------------------------------------------\n");	
		printf(" Input a number : ");
		scanf("%d",&num1);		 

         findFact(num1,&fact);
         printf(" The Factorial of %d is : %d \n\n",num1,fact);
         return 0;
        }

void findFact(int n,int *f)
		{
        int i;

       *f =1;
       for(i=1;i<=n;i++)
       *f=*f*i;
       }

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