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C Exercises: Calculate the factorial of a given number

C For Loop: Exercise-15 with Solution

Write a C program to calculate the factorial of a given number.

Pictorial Presentation:

Calculate the factorial of a given number

Sample Solution:

C Code:

#include <stdio.h>
void main(){
  int i,f=1,num;

  printf("Input the number : ");
  scanf("%d",&num);

  for(i=1;i<=num;i++)
      f=f*i;

  printf("The Factorial of %d is: %d\n",num,f);
}

Sample Output: 

Input the number : 5                                                                                          
The Factorial of 5 is: 120

Flowchart:

Flowchart: Calculate the factorial of a given number

C Programming Code Editor:

Improve this sample solution and post your code through Disqus.

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP