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Thread: Cannot calculate. Please help me....

  1. #1
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    Default Cannot calculate. Please help me....

    import java.util.*;

    public class testing

    {
    public static void main (String[] args) {

    int a;
    int b;
    int calculation;
    char symbol;
    Scanner input=new Scanner (System.in);
    System.out.println("Enter first integer = ");
    a=input.nextInt();
    System.out.println("Enter second integer = ");
    b=input.nextInt();
    System.out.println("Enter your choice (+,-,*,/)");
    symbol=input.charAt(0);

    switch (symbol) {
    case '+' :
    calculation = a+b;
    System.out.printf("Addition is %d\n", calculation);
    break;
    case '-' :
    calculation = a-b;
    System.out.printf("Subtraction is %d\n", calculation);
    break;
    case '*' :
    calculation = a*b;
    System.out.printf("Multiply is %d\n",calculation);
    break;
    case '/' :
    calculation = a/b;
    System.out.printf("Division is %d\n", calculation);
    break;
    default :
    System.out.printf("Enter valid value = ");

    }

    }
    }


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: Cannot calculate. Please help me....

    Do you have a specific question? Does it compile? Do you receive errors? You need to to give us as much information as possible, or else you make it more difficult to answer, and the more difficult it is to answer the less of a chance you will have in receiving an answer. Lastly, please wrap you code using the [highlight=java][/highlight] tags
    Last edited by copeg; September 15th, 2011 at 01:26 PM.

  3. #3
    Junior Member
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    Default Re: Cannot calculate. Please help me....

    import java.util.*;

    public class testing

    {
    public static void main (String[] args) {

    int a;
    int b;
    int calculation;
    char symbol;
    Scanner input=new Scanner (System.in);
    System.out.println("Enter first integer = ");
    a=input.nextInt();
    System.out.println("Enter second integer = ");
    b=input.nextInt();
    System.out.println("Enter your choice (+,-,*,/)");
    symbol=input.charAt();

    switch (symbol) {
    case '+' :
    calculation = a+b;
    System.out.printf("Addition is %d\n", calculation);
    break;
    case '-' :
    calculation = a-b;
    System.out.printf("Subtraction is %d\n", calculation);
    break;
    case '*' :
    calculation = a*b;
    System.out.printf("Multiply is %d\n",calculation);
    break;
    case '/' :
    calculation = a/b;
    System.out.printf("Division is %d\n", calculation);
    break;
    default :
    System.out.printf("Enter valid value = ");

    }

    }
    }


    Sorry. It my first post to this website. Actually, I wanted to make calculator. When I wanted to compile my it get error like this:-

    found : int
    required: char
    symbol=input.nextInt();
    ^
    1 error

    I knows there is an error in my coding. It just i don`t how to make correction of my coding. Please help. Beside i`m just begin to learn java recently.

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