C++ Program for getting grade from Marks with Else If Ladder

 #include<iostream>

#include<conio.h>

using namespace std;

int main()

{

// 81-100 A;60-80 B;50-60 C;33-50 D;0-33 F;

    int n , m;

cout<<"Enter your Marks :";

cin>>n;

if (n>=80 && n<=100)

{cout<<"A+";}

else if (n>=60 && n<=80)

{cout<<"B";}

else if (n>=50 && n<=60)

  {cout<<"C";}

else if (n>=33 && n<=50)

{cout<<"D";}

else if (n>=0 && n<=33)

{cout<<"Better luck next time";}

}