Function popStack

S-Stack/stackADTUsingLL.cpp:45–62

----------------This function pops the data from the stack-----------------*/

/*----------------This function pops the data from the stack-----------------*/
void* popStack(STACK* stack){
    void* dataOutPtr;
    STACK_NODE* temp;

    if(stack -> count == 0)
        dataOutPtr = NULL;
    else{
        temp = stack -> top;
        dataOutPtr = stack -> top -> dataPtr;
        
        stack -> top = stack -> top -> link;
        
        free(temp);
        
        (stack -> count)--;
    }
    return dataOutPtr;
}