#include <stdio.h>
#include <stdlib.h>
#define MAX_SIZE 5
struct Stack {
int arr[MAX_SIZE];
int top;
};
void initStack(struct Stack *s);
int isFull(struct Stack *s);
int isEmpty(struct Stack *s);
void push(struct Stack *s, int value);
int pop(struct Stack *s);
int main() {
struct Stack myStack;
initStack(&myStack);
push(&myStack, 1);
push(&myStack, 2);
push(&myStack, 3);
int poppedValue = pop(&myStack);
printf("Popped value: %d\n", poppedValue);
return 0;
}
void initStack(struct Stack *s) {
s->top = -1;
}
int isFull(struct Stack *s) {
return s->top == MAX_SIZE - 1;
}
int isEmpty(struct Stack *s) {
return s->top == -1;
}
void push(struct Stack *s, int value) {
if (isFull(s)) {
printf("Stack overflow\n");
return;
}
s->arr[++s->top] = value;
}
int pop(struct Stack *s) {
if (isEmpty(s)) {
printf("Stack underflow\n");
exit(EXIT_FAILURE);
}
return s->arr[s->top--];
}