# C Exercises: Find the factorial of a given number

## 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 :

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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