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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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v_10_04
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1992-02-08
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726b
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50 lines
void push1(int value)
{
if (stack_ptr1 > stack_ptr2)
printf("Stack 1 is full\n");
else
stack[stack_ptr1++] = value;
}
void push2(int value)
{
if (stack_ptr1 > stack_ptr2)
printf("Stack 2 is full\n");
else
stack[stack_ptr2--] = value;
}
int pop1(void)
{
if (stack_ptr1 == 0) {
printf("Stack 1 is empty\n");
return 0;
}
return stack[--stack_ptr1];
}
int pop2(void)
{
if (stack_ptr2 == STACK_SIZE - 1) {
printf("Stack 2 is empty\n");
return 0;
}
return stack[++stack_ptr2];
}
void dump_stack(void)
{
int i;
printf("Stack contains: ");
for (i = 0; i < STACK_SIZE; ++i)
printf("%4d", stack[i]);
printf("\tsp1 = %lu, sp2 = %lu\n",
(unsigned long)stack_ptr1, (unsigned long)stack_ptr2);
}