Question

I’m trying to write a simple stack code and I get this code from a data structure book but it fails when i try to compile.

bool pushStack (STACK* stack, void* dataInPtr)
{
    STACK_NODE* newPtr;

    newPtr = (STACK_NODE*) malloc(sizeof(STACK_NODE));
    if(!newPtr)
        return FALSE;

    newPtr->dataPtr = dataInPtr;

    newPtr->link = stack->top;
    stack->top = newPtr;

    (stack->count)++;
    return TRUE;
}

For example for this code, compiler says

Error   1   error C2061: syntax error : identifier 'pushStack'  
Error   2   error C2059: syntax error : ';' 
Error   3   error C2059: syntax error : 'type'  

How can we resolve this? I tried to change TRUE to true, but it’s not worked.

Answer 1

C doesn’t have a bool data type (C++ does, though). Have the function return an int, and return 1 for TRUE and 0 for FALSE. Alternatively, #DEFINE TRUE 1 and #DEFINE FALSE 0.