CODE EXAMPLE FOR CPP

Program to find GCD or HCF of two numbers c++

// C++ program to find GCD of two numbers
#include <bits/stdc++.h>
using namespace std;
 
int static dp[1001][1001];
 
// Function to return gcd of a and b
int gcd(int a, int b)
{
    // Everything divides 0
    if (a == 0)
        return b;
    if (b == 0)
        return a;
 
    // base case
    if (a == b)
        return a;
     
    // if a value is already
    // present in dp
    if(dp[a][b] != -1)
        return dp[a][b];
 
    // a is greater
    if (a > b)
        dp[a][b] = gcd(a-b, b);
     
    // b is greater
    else
        dp[a][b] = gcd(a, b-a);
     
    // return dp
    return dp[a][b];
}
 
// Driver program to test above function
int main()
{
    int a = 98, b = 56;
    memset(dp, -1, sizeof(dp));
    cout<<"GCD of "<<a<<" and "<<b<<" is "<<gcd(a, b);
    return 0;
}