GCD of two numbers using recursion
Write a C++ Program to find GCD of two numbers using recursion. Here’s simple C++ Program to find GCD(HCF) of two numbers using recursion in C++ Programming Language.
What are Functions ?
Function is a block of statements that performs some operations. All C++ programs have at least one function – function called “main()”. This function is entry-point of your program.
A function declaration tells the compiler about a function’s name, return type, and parameters. A function definition provides the actual body of the function.
Defining a Function : :
The general form of a C++ function definition is as follows:
return_type Function_Name( list of parameters )
{
//function’s body
}
- return_type : suggests what the function will return. It can be void, int, char, some pointer or even a class object.
- Function_Name : is the name of the function, using the function name it is called.
- Parameters : are variables to hold values of arguments passed while function is called. A function may or may not contain parameter list.
- Function body : is he part where the code statements are written.
Below is the source code for C++ Program to find GCD of two numbers using recursion which is successfully compiled and run on Windows System to produce desired output as shown below :
SOURCE CODE : :
/* C++ Program to find GCD of two numbers using recursion */ #include <iostream> using namespace std; int hcf(int n1, int n2); int main() { int n1, n2; cout << "\nEnter 1st positive integer :: "; cin >> n1; cout << "\nEnter 2nd positive integer :: "; cin >> n2; cout << "\nGCD of Two Numbers [ " << n1 << " & " << n2 << " ] is :: " << hcf(n1, n2)<<"\n"; return 0; } int hcf(int n1, int n2) { if (n2 != 0) return hcf(n2, n1 % n2); else return n1; }
OUTPUT : :
/* C++ Program to find GCD of two numbers using recursion */ Enter 1st positive integer :: 14 Enter 2nd positive integer :: 46 GCD of Two Numbers [ 14 & 46 ] is :: 2 Process returned 0
Above is the source code for C++ Program to find GCD of two numbers using recursion which is successfully compiled and run on Windows System.The Output of the program is shown above .
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