C Program for Factorial of a Number
Subject: PPS (Programming for Problem Solving)
Contributed By: Sanjay
Created At: February 3, 2025
Question:
Write a C Program for Factorial of a Number
Explanation Video:
Explanation:
Factorial of n is n! = n × (n-1) × (n-2) ... × 1.
We use a for loop to multiply numbers from 1 to n.
Source Code:
#include <stdio.h>
int main() {
int num, i, fact = 1;
printf("Enter a number: ");
scanf("%d", &num);
for (i = 1; i <= num; i++) {
fact *= i; // Multiply fact by i
}
printf("Factorial of %d is %d\n", num, fact);
return 0;
}
Input:
Enter a number: 5
Output:
Factorial of 5 is 120