include

C program to find the factorial of a number first declares three integer variables – num, fact and i.

It prompts the user to enter a number using the printf and scanf functions.

Using a for loop, the program calculates the factorial of the entered number.

Finally, the program uses the printf function to output the factorial of the entered number to the user.

int main() {
int num, fact=1, i;
printf("Enter a number: ");
scanf("%d", &num);

for(i=1; i<=num; i++) {
    fact = fact * i;
}

printf("Factorial of %d is %d", num, fact);

return 0;
}

Output:

Enter a number: 5
Factorial of 5 is 120

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