/* $Id$ */ /******************************************************************** * File: stack.c * * Simple stack implementation. * * Author: M. Tim Jones * */ #include #define MAX_ELEMENTS 50 static int stack[MAX_ELEMENTS]; static int index; void stackInit( void ) { index = 0; return; } int stackNumElems( void ) { return index; } unsigned int stackTop( void ) { assert( index > 0 ); return (stack[index-1]); } void stackPush( unsigned int value ) { assert ( index < MAX_ELEMENTS ); stack[index] = value; index++; return; } unsigned int stackPop( void ) { unsigned int value; assert( index > 0 ); index--; value = stack[index]; return value; }