passing by reference

**mapunk** · 11-30-2005

what's wrong with this? I get this error: The error refers to the red line.

error: incompatible types in assignment

(in my header file)

Code:

#define MAX_TEST 80;

typedef struct {
    char aString[MAX_TEXT-1];
    int anInt;
    double aDouble;
} Lab10Struct;

(in other file -- not the whole file, just the parts i have questions about)

Code:

Lab10Struct passByReference( Lab10Struct *variable )
{
    strcat(variable->aString, "Hello again, do you like my hat?");

    variable->anInt -= 123456789;

    variable->aDouble -= 1.23456789;

    return *variable;
}

int main()
{
   Lab10Struct *ptr, s1;

   ptr = passByReference(&s1);

   if (ptr != &s1)
   {
      printf("Failed test #4\n");
      pass = 0;
   }

   return 0;
}

**Dave_Sinkula** · 11-30-2005

Your function returns an object, not a pointer.

Code:

#define MAX_TEXT 80 /* no semicolon*/

typedef struct {
    char aString[MAX_TEXT-1];
    int anInt;
    double aDouble;
} Lab10Struct;

Lab10Struct* passByReference( Lab10Struct *variable )
{
    strcat(variable->aString, "Hello again, do you like my hat?");

    variable->anInt -= 123456789;

    variable->aDouble -= 1.23456789;

    return variable;
}

**mapunk** · 11-30-2005

Originally Posted by Dave_Sinkula

Your function returns an object, not a pointer.

EDIT: nevermind, I didn't see that you made the function a pointer...I didn't catch that. Thanks for the help. It worked

And thanks about that #define thing...i just wrote that quickly in my post and messed up...I didn't copy it from my code. It's written fine there

Thread: passing by reference

Thread Tools

Search Thread

Display

passing by reference

Similar Threads

Getting an error with OpenGL: collect2: ld returned 1 exit status

Undefined Reference Compiling Error

Screwy Linker Error - VC2005

C OpenGL Compiler Error?

c++ linking problem for x11