#include <stdio.h> int main() { int stack[5]; int top = -1; // -1 means the stack is empty // Push 10, 20 and 30 top++; stack[top] = 10; top++; stack[top] = 20; top++; stack[top] = 30; printf("Top item: %d\n", stack[top]); // Pop the top item printf("Popped: %d\n", stack[top]); top--; printf("Top item now: %d\n", stack[top]); return 0; }