79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
#include <stdio.h>
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#define MAX_SIZE 100
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int top = -1;
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int stack[MAX_SIZE];
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void push(int c) {
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if (top < MAX_SIZE - 1) {
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stack[++top] = c;
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} else {
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printf("Stack overflow\n");
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}
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}
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int pop() {
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if (top >= 0) {
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return stack[top--];
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} else {
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printf("Stack underflow\n");
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return -1;
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}
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}
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void display() {
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printf("The stack is: ");
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for (int i = top; i >= 0; i--) {
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printf("%d\t", stack[i]);
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}
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printf("\n");
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}
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int isEmpty() {
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return top == -1;
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}
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int peek() {
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if (!isEmpty()) {
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return stack[top];
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} else {
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printf("Stack is empty\n");
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return -1;
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}
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}
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int main() {
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int choice;
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while (1) {
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printf("1. Push\n2. Pop\n3. Display\n4. Peek\n5. Check if Empty\n6. Exit\n");
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scanf("%d", &choice);
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switch (choice) {
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case 1:
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printf("Enter an element: ");
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int element;
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scanf("%d", &element);
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push(element);
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break;
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case 2:
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printf("The top element is: %d\n", pop());
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break;
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case 3:
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display();
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break;
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case 4:
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printf("The top element is: %d\n", peek());
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break;
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case 5:
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if (isEmpty()) {
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printf("Stack is empty\n");
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} else {
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printf("Stack is not empty\n");
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}
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break;
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case 6:
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return 0;
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default:
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printf("Invalid choice.\n");
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}
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}
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}
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