Print Out Factors Of Numbers

This is a discussion on Print Out Factors Of Numbers within the C Programming forums, part of the General Programming Boards category; i need to find the number of factors that are not greater than 1000 using a program built in C. ...

  1. #1
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    Print Out Factors Of Numbers

    i need to find the number of factors that are not greater than 1000 using a program built in C.

    I have got everythin workin ok, but when it comes to printf() i dont know what to put or how to get it to load the numbers to do what im asking for.

    everythin i have tried in printf isnt working, any ideas?

  2. #2
    The Richness... Richie T's Avatar
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    ok i'm gonna work on an assumption, (since you havent posted code) that your program looks a little like this:

    Code:
    int main ()
    {
            int a,b,c,d.....;
            float x,y,z.....; 
            char something;  /*and so on*/
    
            /*body of program*/
            .
            .
            .
    }
    here's how printf works:

    Code:
    printf ("Integer is %d, Float is %f, Character is %c\n", a, x, something);
    That should help you out, but you really should supply some code so we can see what you may have done wrong.
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  3. #3
    and the hat of wrongness Salem's Avatar
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    Post your code.

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    ive got at the top int isfactorof and int numfactors with code underneath each. then i have got void main():

    Code:
    void main()
    
    {	int i,  result, max; 
    
    while(i<1000) {result = numberfactor (i); 
    
    
    if (result > max) { max = result;} i++; 
    
    printf("Number of Factors are:\n\n number = %d\n\n", max);
    
    return;

  5. #5
    and the hat of wrongness Salem's Avatar
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    > void main()
    main returns an int

    > while(i<1000) {result = numberfactor (i);
    There's nothing here to increment i, and since you don't initialise i either, the loop either does nothing at all, or gets stuck forever.

  6. #6
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    Quote Originally Posted by Salem
    > void main()
    main returns an int

    > while(i<1000) {result = numberfactor (i);
    There's nothing here to increment i, and since you don't initialise i either, the loop either does nothing at all, or gets stuck forever.
    this is where i get lost, and dont know what to do on it.

    what do i need to do so that i can fix this? what am i missing out?

  7. #7
    and the hat of wrongness Salem's Avatar
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    Braces and indentation mostly.
    Any consistent approach to formatting will make your code a lot easier to understand from the outset.
    Code:
    int main ( ) {
        int i, result, max;
        i = 0;  /* added initialisers */
        max = 0;
    
        while ( i < 1000 ) {
            result = numberfactor (i); 
            if (result > max) {
                max = result;
            }
            i++; 
        } /* probably missing, I couldn't tell */
    
        printf("Number of Factors are:\n\n number = %d\n\n", max);
    
        return 0;  /* successful run, return 0 */
    }

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