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Thread: division without division operator

  1. #1
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    Default division without division operator

    hello i started learning how to program this week and i am not able to complete this exercise you can see what is wrong in the code

    static int division (int a, int b) {
    int c= a-b;
    while (c <= b) {
    c = c - b;
    }
    if (c < b) {
    return c + b; }

    else {

    return c;

    }

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: division without division operator

    i am not able to complete this exercise
    Please explain what the problem is.
    If there are error messages, copy the full text and paste it here.
    If the output is not what you want, post the output and explain what is wrong and show what you want instead.

    Also please add comments to the code describing what it is trying to do and how it is going to do it.

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: division without division operator

    Quote Originally Posted by Norm View Post
    Please explain what the problem is.
    If there are error messages, copy the full text and paste it here.
    If the output is not what you want, post the output and explain what is wrong and show what you want instead.

    Also please add comments to the code describing what it is trying to do and how it is going to do it.

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    Thanks for reply. I need the function to divide two numbers without the division operator and so I am using subtraction method, but when I perform the function I for example choose the number 31 for variable "a" which will divide by variable "b" which for example I choose 5. but the function only subtracts once but by the cycle I made it should subtract until it is not below the variable "b". The result of 31 divided by 5 gave 26.

    Here is the code:

    static int division (int a, int b) {
    		int c= a-b;
    		while (c <= b) {
    			c = c - b;
    		}
    		if (c < b) {
    			return c + b; }
     
    		else {
     
    			return c;
     
    		}

  4. #4
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    Default Re: division without division operator

    Please use better variable names in the code. Variable names should describe what the variable contains. a,b,c do not describe what they contain. Better names would be dividend, divisor, quotient and remainder.

    Should the method count the number of times a subtraction is made?
    What is in c when the method exits?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: division without division operator

    Should the method count the number of times a subtraction is made? no need to count, just subtract the divisor and dividend until the result is no less than the dividend

    What is in c when the method exits? a variable c is the result of subtraction


    31/5=6 and 31-5=26, 26-5=21, 21-5=16, 16-5, 11-5=6, and this I want the function to do.

  6. #6
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    Default Re: division without division operator

    Ok, can you rename the variables to show which one is the dividend, the divisor, the quotient and the remainder?

    Can you describe in English how the program will compute the quotient and the remainder?
    You need a description of the steps the program should take to solve the problem before writing the code.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: division without division operator

    i already solve thanks for help.

  8. #8
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    Default Re: division without division operator

    no need to count
    Were you able to solve the problem without counting?
    If so can you post the code that shows how you did it?
    If you don't understand my answer, don't ignore it, ask a question.

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