Hello, I have to write a C++ program that allows the user to enter a test score

Question

Hello,

I have to write a C++ program that allows the user to enter a test score in percentage for a student. Please use the while loop to validate the user input. The program should define a function to assign a letter grade to the score based on the following scheme:

grade is A if score >=90

grade is B if score >=80, and score <90

grade is C if score >=70, and score <80

grade is D if score >=60, and score <70

grade is F if score <60

The main program should call the function and display the score in letter grade.

This is what I have so far but I do not know if it is right. I still need to work on the while loop but I am not sure how to do it:

#include <iostream>

using namespace std;

int main()
{
int percent;
cout << "Enter the percentage: ";
cin >> percent;
  
if(percent >=90)
cout << "Your grade is an A";
else if (percent >= 80 && percent < 90)
cout << "Your grade is a B";
else if (percent >=70 && percent < 80)
cout << "Your grade is a C";
else if (percent >= 60 && percent < 70)
cout <<"Your grade is a D";
else if (percent < 60)
cout << "Your grade is an F";
}
  

return 0;
  
  
}
Thank you for your time and help.

Explanation / Answer

Program:

#include <iostream>

using namespace std;
int main()
{
int percent;
cout << "Enter the percentage: ";
cin >> percent;

while (percent != 0) // Here this loop is return 0 until percentage is equals to zero

{
if(percent >=90)
cout << "Your grade is an A";
else if (percent >= 80 && percent < 90)
cout << "Your grade is a B";
else if (percent >=70 && percent < 80)
cout << "Your grade is a C";
else if (percent >= 60 && percent < 70)
cout <<"Your grade is a D";
else if (percent < 60)
cout << "Your grade is an F";
  
return 0;
}
  
}

Output:

Enter the percentage: 90

Your grade is an A

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