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Home » Lab » C Program Calculate HCF of 2 Numbers using Functions
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C Program Calculate HCF of 2 Numbers using Functions

By Dinesh Thakur

In this program user ask to find out the HCF (highest common factor) using function. As declaring required variable user ask to enter the value. User made a function named “HCF”. Then using control statement if(a>b) the HCF (a,b) else (b,a) after fetching the HCF through getch(). 

In the next move user calls the function that made HCF. Here user also declare a variable named r=1. And a while condition too. While(r! =0) if the condition got true than the value must be fetch out from use of modulus operator. After that interchange the value within x, y or r. display the result on the screen.

Problem Statement:

This is C program that asks user to find out the HCF using function.

  1. Declaring the variable.
  2. Using control statement.
  3. Display result on the screen.

This is C program here user need to find out the HCF using function Method. Output of this program shown below. 

#include<stdio.h> 
int hcf(int x,int y);
void main()
{
    int a,b,d;
    clrscr();
    printf("Enter 2 Numbers : ");
    scanf("%d%d",&a,&b);
    if(a>b)
      {
           d=hcf(a,b);
      }
    else
     {
           d= hcf(b,a);
     }
           printf("HCF is= %d",d);
           getch();
}
    int hcf(int x,int y)
    {
       int r=1;
       while(r!=0)
          {
               r=x%y;
               x=y;
               y=r;
          }
               return(x);
    } 

Calculate HCF of 2 Numbers using Functions

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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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