Casting HW

Practice: predict the output (Java)

Q1:
2
2
2.0
2.5

Q2:
-2
-3
3

Q3:
2147483647
-2147483647

FRQs

public class FRQ {
    // FRQ 1. Average with correct casting
    public static double avgInt(int a, int b) {
        return (a + b) / 2.0; 
    }

    // FRQ 2. Percentage
    public static double percent(int correct, int total) {
        if (total == 0) {
            return 0.0; // avoid division by zero
        }
        return (100.0 * correct) / total;
    }

    // FRQ 3. Safe remainder
    public static int safeMod(int a, int b) {
        if (b == 0) {
            return 0;
        }
        return a % b;
    }

    public static void main(String[] args) {
        // Test FRQ 1
        System.out.println("FRQ1 avgInt(3, 56) = " + avgInt(3, 56));  // should preserve .5 if any

        // Test FRQ 2
        System.out.println("FRQ2 percent(45, 60) = " + percent(45, 60)); // expect 75.0

        // Test FRQ 3
        System.out.println("FRQ3 safeMod(10, 3) = " + safeMod(10, 3));  // expect 1
        System.out.println("FRQ3 safeMod(10, 0) = " + safeMod(10, 0));  // expect 0 (safe case)
    }
}

System.out.println(FRQ.avgInt(3,5));
System.out.println(FRQ.percent(2,7));
System.out.println(FRQ.safeMod(29,58));

4.0
28.571428571428573
29