score programming

#include<iostream>

using namespace std;

int main()

{

    

    int score;

    

    cout<<"Enter your score"<<endl;

    cin>>score;

    

    if(score >= 90)

        cout<<"The grade is A"<<endl;

    

    else if(score >= 80)

        cout<<"The grade is B"<<endl;

    

    else if(score >= 70)

        cout<<"The grade is C"<<endl;

    

    else if(score >= 60)

        cout<<"The grade is D"<<endl;

    

    else

        cout<<"The grade is F"<<endl;

    

    system("PAUSE");

    return 0;

}