Factorial of a number in c programming

 Factorial of a number in c programming:-#include<studio.h>

main()

{

  int number,factorial=1,i;

  printf("Enter a number for knowing it's factorial\n");

  scanf("%d",&number);

  for(i=1;i&lt;=number;i++)

  {

   factorial=factorial*i;

  }

  printf("%d!=%d\n",number,factorial);

}

Output:-

Enter a number for knowing it's factorial
5
5!=120

Explanation:-

Initializes :

• number-for storing given number
• factorial-for storing factorial of a number.
• i for using in loop

Prompting user for input through scanf statement.

The main logic goes here:(factorial=factorial*i)

• i=1 and i<=number(say 5) which is true then factorial=1*1=1 then i increments by 1
• Now i=2 and as i<=5 which is true then factorial=1*2=2.Now i increases by 1
• Now i=3 and as i<=5 which is true then factorial=2*3=6.Now i increases by 1
• Now i=4 and as i<=5 which is true then factorial=6*4=24.Now i increases by 1
• Now i=5 and as i<=5 which is true then factorial=24*5=120.Now i increases by 1
• Now i=6 and as I is not less or equal to 5 the loop terminates

There fore it prints the factorial which is 120

Thanks for wathing.