stackinc

#include <stdio.h>

int top = -1;
int stack[10];

void push();
void pop();
void peep();
void disp();

int main() {
    int n = 0;

    while (n != 5) {
        printf("\nEnter your choice: 1:push 2:pop 3:peep 4:display all 5:exit \n");
        scanf("%d", &n);
        switch (n) {
            case 1:
                push();
                break;
            case 2:
                pop();
                break;
            case 3:
                peep();
                break;
            case 4:
                disp();
                break;
            case 5:
                printf("\nExit");
                break;
            default:
                printf("\nInvalid choice");
                break;
        }
    }

    return 0;
}

void push() {
    if (top == 9) {
        printf("\nOverflow");
    } else {
        top++;
        printf("\nEnter an element\n");
        scanf("%d", &stack[top]);
    }
}

void pop() {
    if (top == -1) {
        printf("\nUnderflow");
    } else {
        printf("\nstack[%d]=%d element removed", top, stack[top]);
        top--;
    }
}

void peep() {
    if (top >= 0) {
        printf("\nstack[%d]=%d", top, stack[top]);
    } else {
        printf("\nEmpty");
    }
}

void disp() {
    for (int i = 0; i <= top; i++) {
        printf("\nstack[%d]=%d", i, stack[i]);
    }
}