CODEWITHSUNDEEP
javaintegeraddition
user3816246
user3816246

Reputation: 21

Java - continues adding value on integer

im having a little problem about my codes

public class ex{
public static void main(String[] args) {
int sum,int a = 1,int b = 2;
int c = 1,int d = 2;

if (a<b) {
    sum = sum+1;
}
if (c<b) {
    sum = sum+1;    
}
System.out.println("output :"+sum); 
}
}

I wanted to add a value of 1 in the int sum if the conditions are met. but its not compiling

the output should be like this:

output: 2

Upvotes: 0

Views: 100

Answers (4)

Sai Manoj
Sai Manoj

Reputation: 81

First things first.. If you are a beginner to Java, this is an advise for you to learn well about the syntax of Java declaration, initialization and usage.

Declaration: If you want to declare variables separately, you have to do it as below:

int a;
int b;
int c;

If you want to declare multiple variables in a single line, you have to do it as below:

int a,b,c;

Initialization: If you want to initialize multiple variables in a single line, do it as below:

int a=0, b=4, c=3;

Usage: Important thing you would like to learn here is - you can always declare 'n' number of variables without initialization.. but if you want to use any of them, they must be initialized at least once before you use them. Using them also includes even to print them.

If you won't follow any of the above mentioned points, you must get a compilation error.

Here is the code you must follow:

public class ex{
public static void main(String[] args) {
int sum = 0 , a = 1, b = 2;
int c = 1, d = 2;

if (a < b) {
    sum = sum + 1;
}
if (c < b) {
    sum = sum + 1;    
}
System.out.println("output :"+sum); 
}
}

Upvotes: 2

Xenira
Xenira

Reputation: 81

Try this:

int sum = 0,a = 1,b = 2;
int c = 1, d = 2;

if (a<b) {
    sum++;
}
if (c<b) {
    sum++;    
}

System.out.println("output :"+sum);

Upvotes: 1

christopher
christopher

Reputation: 27346

Don't declare variables on the same line like this, even when it's compilable. It compacts your code in a way that makes it difficult to understand, especially when you name them a,b,c and d. 

int sum = 0;
int a = 1;
int b = 2;
int c = 1;
int d = 2;

Change your declaration of variables to that and the rest of the code will run fine. But I would recommend reading some basic Java tutorials so you understand how to write code that compiles. I would also suggest using an IDE so these kinds of errors are flagged while you write your code.

IDEOne (with compilation errors): http://ideone.com/rYzIf5
IDEOne (without compilation errors): http://ideone.com/rYzIf5

Upvotes: 1

Nirav Prajapati
Nirav Prajapati

Reputation: 3005

public class TestExample {
    public static void main(String args[]){
        int sum = 0 ;
        int a = 1;
        int b = 2;
        int c = 1;
        int d = 2;

        if (a<b) {
            sum = sum+1;
        }
        if (c<b) {
            sum = sum+1;    
        }
        System.out.println("output :"+sum);
    }

}

declaration of variable is wrong you should not declare your variable like int a,int b= 10 avoid declaration of variable on same line.

your code gives compilation error try this one it will give output as your expectation

Upvotes: 1

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