error in calling a function

This is a discussion on error in calling a function within the C++ Programming forums, part of the General Programming Boards category; hello . it is a part of my program but I have an error in the 8th line . ( ...

  1. #1
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    Unhappy error in calling a function

    hello .
    it is a part of my program but I have an error in the 8th line . ( b=ax(a); ----> lvalue required )
    can you plz tell me what is wrong and what I must do ?

    Code:
    #include <iostream.h>
    #include <conio.h>
    
    int * ax(int *);
    
    int main(){
      int a[10],i,b[10];
      for(i=0;i<10;++i)
        cin >> a[i];
      b=ax(a);

  2. #2
    and the hat of wrongness Salem's Avatar
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    You can't return an arrray - only a pointer to one

    Easiest thing to do is
    Code:
    void ax( const int *a, int *b);
    
    int main(){
      int a[10],i,b[10];
      for(i=0;i<10;++i)
        cin >> a[i];
      ax(a,b);
    ax() reads from the array a, and updates array b
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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  3. #3
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    tnx .
    but if you want a function to return a pointer , how to do it ?
    there isn't any function that returns (int * ) ?

  4. #4
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    Lightbulb

    I found the answer , thanks

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