CODEWITHSUNDEEP
java
Fruit
Fruit

Reputation: 31

duplicate local variable in a static method

in my head I'm initializing a variable named grade and using if else statement to change the variable. but I am getting a duplicate local variable error. I am returning double so I am initializing to 0.0. Am I understanding "scope" wrong here? 

 public static double finalGrade(double assignment, double midterm, double finalExam) {
            double grade=0.0;

            double midWorth = divide(midterm,20);
            double finalWorth = divide(finalExam,45);
            if(finalWorth < midWorth) {
                double grade = divide((assignment + finalExam),80); 
            }
            else  {
                double grade = divide((assignment + midterm + finalExam), 100);
            }
            return grade;
        }

Upvotes: 0

Views: 255

Answers (2)

BadPiggie
BadPiggie

Reputation: 6359

you need to specify the data type double only once when you declare the variable. No need when you update the value.

There code be like,

public static double finalGrade(double assignment, double midterm, double finalExam) {
    double grade=0.0; // declaring

    double midWorth = divide(midterm,20);
    double finalWorth = divide(finalExam,45);

    if(finalWorth < midWorth) {
        grade = divide((assignment + finalExam),80); // updating value
    } else  {
        grade = divide((assignment + midterm + finalExam), 100); // updating value
    }

    return grade;
}

Upvotes: 0

Scary Wombat
Scary Wombat

Reputation: 44834

Think about the scope of variables

In

if(finalWorth < midWorth) {
    double grade = divide((assignment + finalExam),80); 
}
else  {
    double grade = divide((assignment + midterm + finalExam), 100);
}

The scope of the grade variables in the if-else are limited to the if-else - not visible outside of the curly braces

so do

if(finalWorth < midWorth) {
    grade = divide((assignment + finalExam),80); 
}
else  {
    grade = divide((assignment + midterm + finalExam), 100);
}

Upvotes: 1

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