stack

#include<stdio.h>
#define MAX 10
int stack[MAX],top=-1;
void push(int data){
        if(top==MAX-1){
                printf("Stack Overflow");
        }
        else{
                top++;
                stack[top]=data;
        }
}
void pop(){
        int data;
        if(top==-1)
                printf("Stack Underflow");
        else{
                data=stack[top];
                top--;
                printf("Deleted data element %d",data);
        }
}
void peek(){
        int data;
        if(top==-1)
                printf("Stack is Empty");
        else{
                data=stack[top];
                printf("Element at the top of stack:%d",data);
        }
}
void display(){
        int i;
        if(top==-1)
        printf("Stack is Empty");
        else{
                printf("The elements are:");
                for(i=top;i>=0;i--){
                        printf("%d ",stack[i]);
                }
        }
}
int main(){
        int  option,item;
        do{
        printf("\n""*****MAIN MENU*****");
        printf("\n 1. peek");
        printf("\n 2. pop");
        printf("\n 3. peek");
        printf("\n 4. Display");
        printf("\n 5. Exit");
        printf("\n Enter your option:");
        scanf("%d",&option);
        switch(option){
                case 1:
                        printf("Enter the item to be pushed:");
                        scanf("%d",&item);
                        push(item);
                        break;
                case 2:
                        pop();
                        break;
                case 3:
                        peek();
                        break;
                case 4:
                        display();
                        break;
                case 5:
                        break;
                default:
                        printf("invalid condition");
                        break;
        }
}while(option!=5);
return 0;
}