Grade by Score
Programming Basics · Java
TASK
Problem
Read an integer score from 0 to 100. Print `A` for 90–100, `B` for 75–89, `C` for 60–74, `D` for 40–59, and `F` otherwise.
EXAMPLE
Example
95
A
LIMITS
Constraints
0 ≤ score ≤ 100
LEARN
Theory for this problem
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The core idea of **Grade by Score** is to model the requested operation directly: Read an integer score from 0 to 100. Print `A` for 90–100, `B` for 75–89, `C` for 60–74, `D` for 40–59, and `F` otherwise. The reference solution uses `Scanner` for input. Keep only the state needed for this result, choose numeric types that cover the stated bounds, and preserve the exact input/output contract. This makes the solution easier to verify on boundary cases and avoids unrelated work.
NEED HELP?
Hints
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['Follow the statement for **Grade by Score** literally and identify the smallest state needed to produce its output.', 'The reference solution relies on `Scanner` for input; test the smallest allowed input and one boundary case from the constraints.']
ANSWER
Solution
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// CodeMaster — Grade by Score
import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int score = sc.nextInt();
if (score >= 90) System.out.println("A");
else if (score >= 75) System.out.println("B");
else if (score >= 60) System.out.println("C");
else if (score >= 40) System.out.println("D");
else System.out.println("F");
}
}