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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:

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C Programming: Tips of the Day

Clearing a char array c

It depends on how you want to view the array. If you are viewing the array as a series of chars, then the only way to clear out the data is to touch every entry. memset is probably the most effective way to achieve this.

On the other hand, if you are choosing to view this as a C/C++ null terminated string, setting the first byte to 0 will effectively clear the string.

Ref : https://bit.ly/3uM7JnL