Skip to main content

Finding Factorial of a number | C programming

 Q.6    WAP in C/ C++/ java to find the factorial of the number.


Solution : 

#include<stdio.h>

void main()
{
    int n;
    printf("\nEnter any positive number : ");
    scanf("%d", &n);

    if (n<0)
    {
        printf("\nInvalid input! Enter the value again -->");
        main(); // calls the main() function again
    }
    else
    {
        int fact=1;
        for(int i=1; i<=n; i++)
        {
            fact=fact*i;
        }
        printf("Factorial is %d\n", fact);
    }
} // end of main()


Comments

Post a Comment

Popular posts from this blog

Calculating Sum of digits & total number of digits | C programming

  Q.7       WAP in C/ C++/ java to find the sum of the digits of the number and also count   the number of digits present.          Example,                      Input : 123,                       Output : Sum of digits = 6             [ expl. 1+2+3]                                          Total digits = 3 Solutions : #include <stdio.h> int   digits ( int  x)  // function to count total no. of digits {      int   c = 0 ;      while  (x > 0 )     {       ...
Post a Comment
Read more

Neon Number | C programming

 Q.8     WAP in C/ C++/ java to check whether the number is a Neon number or not. Input: 9 Output: Neon Number Explanation: the square is 9*9 = 81 and the sum of the digits of the square ( 8+1) is 9. Solution :  #include <stdio.h> int   sumofdigits ( int  x)  // function to compute sum of digits {      int   sum = 0 ;      while (x > 0 )     {          sum += x % 10 ;         x = x / 10 ;     }      return   sum ; } int   main () {      int   n ;         printf ( " \n Enter any positive number : " );      scanf ( " %d " ,  & n );      if  ( n < 0 )     { ...
Post a Comment
Read more