program to implement stack using array

#include<stdio.h>
#define MAX 10
void push(int stack[MAX],int *top,int val);
void pop(int stack[MAX],int *top,int *val);
void tra(int stack[MAX],int *top);
main()
{
    int stack[MAX],top=-1,n,val,ch;
    while(1)
    {
    printf("\n..............MENU..............\n");
    printf("\nselect your choice\n");
    printf("1.push\n");
    printf("2.pop\n");
    printf("3.traverse\n");
    printf("4.exit\n");
    printf("enter your choice:");
    scanf("%d",&ch);
    switch(ch)
    {
        case 1:
        printf("enter the element to be pushed:");
        scanf("%d",&val);
        push(stack,&top,val);
        break;
        case 2:
        pop(stack,&top,&val);

        break;
        case 3:
        tra(stack,&top);
        break;
        case 4:
        exit(1);
        default :
        printf("invalid choice\n");

    }
}}

void push(int stack[MAX],int *top,int val)
{
    if(*top<MAX)
    {
        *top=*top+1;
        stack[*top]=val;
    }
    else
    {
        printf("the stack is full can not push a value\n");
        return;
    }
}
void pop(int stack[MAX],int *top,int *val)
{
    if(*top>=0)
    {
        *val=stack[*top];
        *top=*top-1;
        printf("the value poped is %d",*val);
    }
    else
    {
        printf("the stack is empty \n");
        return;
    }
}
void tra(int stack[MAX],int *top)
{
    int i;
    if(*top==-1)
    {
        printf("the stack is empty\n");
        return;
    }
    else
    {
        printf("the elements in the stack are\n");
        for(i=*top;i>=0;i--)
        printf("%d\t",stack[i]);
    }
}

                               OUTPUT

..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:1
enter the element to be pushed:1

..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:1
enter the element to be pushed:2

..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:1
enter the element to be pushed:3

..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:3
the elements in the stack are
3       2       1
..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:2
the value poped is 3
..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:2
the value poped is 2
..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:2
the value poped is 1
..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:2
the stack is empty

..............MENU..............

select your choice
1.push
2.pop
3.traverse
4.exit
enter your choice:4

Process returned 1 (0x1)   execution time : 32.152 s
Press any key to continue.