Thread: Please help me about my project

  1. #1
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    Please help me about my project

    I'm a newbie here, Im a college student from Philippines. i would just like to ask a way to code the given problem. Where a program that when you enter any integer, it will display whether it is negative or positive then terminate the program when you enter 0 using do/while loop in c language. Please someone help me about this one. I already made to display the positive or negative but it always terminate after that. Thankyou

  2. #2
    Registered User rstanley's Avatar
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    We don't program your project. You need to show us your attempt at writing the code, then we can comment on your attempt.

    Please also read the FAQs at the top of the forum.

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    here's one of my project

    8 positive or negative.cpp8 positive or negative.cpp
    Quote Originally Posted by rstanley View Post
    We don't program your project. You need to show us your attempt at writing the code, then we can comment on your attempt.

    Please also read the FAQs at the top of the forum.

  4. #4
    Registered User rstanley's Avatar
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    Please post all cde in [CODE ] blocks, as instructed in the FAQ's.
    Code:
    #include<stdio.h>
    #include<conio.h>
    int num,repeat;
    main()
    {   
        printf("Enter any number: ");
        scanf("%d", &num);
        do
        {
        if(num > 0)
        {
            printf("Number is POSITIVE");
        }
        if(num < 0)
        {
            printf("Number is NEGATIVE");
        }
        if(num == 0)
        {
            printf("Number is ZERO");
        }
    }
        while(num=='0');
        repeat=1;
    getch();
    }
    First, you should check the result from scanf() to insure that a valid number has been entered.

    Next, you are comparing num against the character '0, NOT the VALUE 0 (Zero)
    Code:
    while(num == 0);
    // NOT
    while(num == '0');
    Also, make your variables local, and always inisitialize them to zero or some other specific value.

    Last, please don't use conio.h functions. They are non-standard C and only available in Windows compilers.

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    Thankyou sir!

  6. #6
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    sir conio.h is what our professor told us to use so if he check it. He must see it in header

  7. #7
    Registered User awsdert's Avatar
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    Quote Originally Posted by kokoy View Post
    sir conio.h is what our professor told us to use so if he check it. He must see it in header
    I suggest you find a new teacher who knows what he's doing then cause your current one clearly doesn't

  8. #8
    Registered User rstanley's Avatar
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    Quote Originally Posted by kokoy View Post
    sir conio.h is what our professor told us to use so if he check it. He must see it in header
    Then you will need to use conio.h for this course, or at least, this assignment. However, after the course, I would strongly recommend to not use it in the future.

    I would be happy to discuss this privately with your professor, to explain the importance of only using Standard C functions, and avoiding any Windows based extensions to the language.

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