include<iostream>
using namespace std;
int main()
{
	//program to display student grade

double mat_no;
int score;
char name;
char course_code;


	cout<<"enter your name:";
	cin>>name;
	cout<<"enter your mat_no:";
	cin>>mat_no;
	cout<<"enter your course_code:";
	cin>>course_code;
	cout<<"enter your score:";
	cin>>score;


	if(score>=70){

	cout<<"your grade is: A";
}
	if(score>=60){
		cout<<"your grade is: B";
	}
	if(score>=50){
		cout<<"your grade is: C";
	}
	if(score>=45){
		cout<<"your grade is: D";
	}
		if(score<=44){
			cout<<"your grade is: F";
		}

	else{
		cout<<"enter a valid score";
	}
	return 0;
}