Thread: Void Function

  1. #1
    Registered User
    Join Date
    Nov 2020

    Void Function

    Hello I have been encountering some problems with my void function coding. When I enter my three values the command prompt just stops and nothing happens, I would appreciate any advice thanks.

    #include <stdio.h>
    #include <stdlib.h>
    /* run this program using the console pauser or add your own getch, system("pause") or input loop */
    void repayments(float, float, float); // function prototype
    int main() 
        float cost, deposit, interest_rate;
        // get values from user
         printf("Enter the cost of the car:\n");
        scanf("%f", &cost);
          if (cost <= 0)
        printf("ERROR: the cost must be higher than 0\n");
        while(cost <= 0);
          printf("Enter the deposit paid:\n");
          scanf("%f", &deposit);
        if (deposit <= 0 || deposit > cost)
        printf("ERROR: the deposit can't be less than or equal to 0 or greater than cost\n");
        while(deposit <= 0 || deposit > cost);
        printf("Enter the interest rate:\n");
        scanf("%f", &interest_rate);
        if (interest_rate < 0 || interest_rate > 100)
        printf("ERROR: Interest rate must be between 1 and 100\n");
        while(interest_rate < 0 || interest_rate > 100);
        repayments(cost, deposit, interest_rate); // function call with 3 arguments
        return 0;
    void repayments(float c, float d, float ir) // function header
        short int i; // local variable
        for(i = 1; i <= 5; i+12); // 5 iterations - 12, 24, 36, 48, 60
            printf("Your repayment after %hd months is %f\n" , i+12, ((c - d)/i+12)*(ir));

  2. #2
    C++ Witch laserlight's Avatar
    Join Date
    Oct 2003
    Your for loop increment is wrong. It should be i++
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

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