Factorial of a number program in C Language With Example

C Language program to find factorial of a number. It is a simple calculation of a factorial method. This is a basic C tutorial for beginners. Sample source code for this program is given below,

FACTORIAL IN C PROGRAM
This C program is used to find the factorial series for “n” numbers. For example if the factorial is 3, then the calculation will be like this (3! = 3x2x1=6). It will calculate every values by using the looping statement of for loop (for(cn=num;cn>1;cn–)).


FACTORIAL CODE IN C
Q: Write a C program to calculate factorial of a number.

//Header files
# include <stdio.h>
# include <conio.h>
 
void main()
{
    //Program variables
    int cn,num,f=1;
 
    clrscr(); //Function to clear previous output
 
    printf("Enter the value:"); //Display function
    scanf("%d",&num); //Getting input function
 
    for(cn=num;cn>1;cn--) //Looping statement
    {
        f = f * cn;
    }
    printf("Factorial of %d is %d",num,f);
    getch();
}