Create 21hcf.cpp

Author: harshitaasharma

21hcf.cpp

@@ -0,0 +1,21 @@
+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int n;
+    int m;
+    cin>>n;
+    cin>>m;
+    while(m!=n){
+        if(m>n){
+            m=m-n;
+        }
+        else{
+            n=n-m;
+        }
+    }
+    cout<<m;
+    
+    
+    
+    return 0;
+}