pointers

This is a discussion on pointers within the C Programming forums, part of the General Programming Boards category; /*Write a function called add_two() It will receive three pointers to floats It will add the numbers pointed to by ...

  1. #1
    Registered User
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    pointers

    /*Write a function called add_two() It will receive three pointers to floats
    It will add the numbers pointed to by the first two pointers and store their
    sum in the location pointed to by the third pointer. In main(), define j,k, and
    m Scan in j and k, send their addresses to add_two(), and have main() print
    the address of m and its value that is in it from add_two().*/

    #include <stdio.h>
    void add_two (float*,float*,float*);
    void main (void)
    {
    float j,k,m;
    printf("Enter a integer for j and k: ");
    scanf("%d %d",&j,&k);
    add_two(&j,&k,&m);
    printf("%p %d",&m,m);
    scanf("%d",&k);

    }
    void add_two(float *a,float *b,float *c)
    {
    *c = *a + *b;
    getchar();
    }

  2. #2
    Mayor of Awesometown Govtcheez's Avatar
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    Looks close...

    Couple problems.

    1st, main returns an int, not void.
    Code:
    printf("%p %d",&m,m); 
    scanf("%d",&k);
    These aren't right. the scnaf is unecessary, and the printf statement is wrong - you don't want %p, you want %d.

    getchar isn't necessary in addtwo.

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