C program to find the factorial of a number using for loop

C program to find the factorial of a number using for loop beginners to understand basic concepts in factorial program. Factorial number program in c programming language. This program helps you to find the factorials number or not in c. The multiplication of the number is known as factorial number in c language to check the number is fact or not.

#include<stdio.h> 
int main() 
{ 
int i,fact=1,num; 
printf("Enter a num"); 
scanf("%d",&num); 
for(i=1;i<=num;i++)
{ 
fact=fact*i; 
} 
printf("%d",fact); 
return 0; 
}

 

Output

Enter a num 5 120

What is factorial number and how to calculate factorial number

The product of all positive integers less than or equal to a particular positive integer, indicated by that integer and an exclamation point in mathematics. The factorial zero is equal to one. To find the factorial of a number, multiply it by the previous number’s factorial value. For instance, to understand the value of 6! 720 is obtained by multiplying 120 (the factorial of 5) by 6.

Why factorial numbers ends with exclamation

The factorial function is a mathematical formula with the exclamation mark “!” as its symbol. You must multiply all the integers and positives that occur between the number in the formula and the number 1 in the Factorial formula.