Stack program in C with array

Stack in 'C'

/***Main Program **********/
#include <stdio.h>
#define MAX 5
int status,top;

int push(int stack[],int item)
{
  if (top == MAX-1)
		{
			printf("Stack overflow \n");
			status =0;
		}
	else
		{
			status = 1;
			++top;
			stack[top] = item;
		}
}
/***Function to pop ***/
int pop(int stack[])
{
	int ret;
	if (top == -1)
		{
			status = 0 ;
			ret = 0; 
		}
	else
		{
			status = 1;
			ret = stack[top];
			--top;
		}
	return ret;
}

/***Function to Display *****/

void display(int stack[])
{
	int i;
	printf("The stack display is\n");
	if (top == -1)
		{
			printf("Empty\n");
		}
	else
		{
			for(i = top; i>=0; --i)
			printf("\n------\n|%3d   |\n------",stack[i]);
		}
		printf("\n");
}

void main()
{
	int stack[MAX], item;
	int ch;
	top =-1;
	
	do
		{
			do 
				{
					printf("Main menu\n");
					printf("1.Push the item in the stack \n");
					printf("2.Pop the item from stack \n");
					printf("3.End of operation \n");
					printf("Enter your choice \n");
					scanf("%d",&ch);
					
					if (ch < 1 || ch > 3)
						printf("Invalid choice entry  and please try again in between valid range \n");
					}while(ch < 1 || ch > 3);
					switch(ch)
					{
						case 1: printf("Enter the item to be pushed\n");
								scanf("%d",&item);
								printf("%d\n",item);
								push(stack,item);
								if (status)
								{
										printf("After pushing\n");
										display(stack);
										if (top == (MAX-1))
											printf("stack is full\n");
								}		
								else
										printf("stack overflow on push\n");
								break;
								
							case 2: item = pop(stack);
									if(status)
										{
											printf("popped item is %d..after popping\n");
											display(stack);
										}
									else 
									printf("stack underflow on pop\n");
									break;
							default:
									printf("End of execuation\n");
									break;
							}
					}	while(ch != 3);
			}