invalid lvalue in assignment

This is a discussion on invalid lvalue in assignment within the C Programming forums, part of the General Programming Boards category; The red line is where the compiler tells me there is an error: invalid lvalue in assignment. Help please Code: ...

  1. #1
    eee
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    invalid lvalue in assignment

    The red line is where the compiler tells me there is an error: invalid lvalue in assignment. Help please
    Code:
    #include <stdio.h>
    #include "genlib.h"
    #include "simpio.h"
    
    void GetTime(long SysSecs, int *hours,int *minutes,int *seconds);
    main()
    {
        long SysSecs;
        int hours, minutes, seconds;
        printf("Enter device seconds: ");
        SysSecs = GetLong();
        GetTime = (SysSecs, &hours, &minutes, &seconds);
        printf("Time is: %d:%d:%d\n", hours, minutes, seconds);
    }
    void GetTime(long SysSecs, int *hours,int *minutes,int *seconds)
    {
        *hours = SysSecs / 3600;
        *minutes = SysSecs / 60;
        *seconds = SysSecs % 60;
    }

  2. #2
    and the hat of wrongness Salem's Avatar
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    > GetTime = (SysSecs, &hours, &minutes, &seconds);
    Why are you using = here?

    You're trying to call the function.
    See your prior call to printf for how that works.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
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  3. #3
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    You should not assign the arguments to a function.

    Code:
    GetTime(SysSecs, &hours, &minutes, &seconds);
    lvalue (short for left value) refers to it's position related to the assignment operator '='.

  4. #4
    eee
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    oh dear god..result of my tiredness..THANK YOU!!!

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