stack_with_array.c

#include <stdio.h>
#include <stdlib.h>
#define MAX 10

int choice = 0;
int stackBag[MAX] = {};
int pos = 0;
int value = 0;

// Function for Push an Element to Stack
void addToStack(value){
    int i;

    if(pos == (MAX - 1)){
        printf("\n Stack Overflow\n");
    }else{
        stackBag[pos] = value;
        pos = pos + 1;
    }
}

// Function for Pop an Element from Stack
int popToStack(){
    int i;
    if(pos == 0){
        printf("Stack is empty \n");
    }else{
        pos = pos - 1;
    }
}

// Function for Print Elements from Stack
void printStackItems(){
    int i;

    if(pos == 0){
        printf("Stack is empty! \n");
    }else{
        for(i= 0; i < pos ; i++){
            printf("\n %d \n", stackBag[i]);
        }
    }
}

int main(){
    while(1){

        printf("1. Push. \n");
        printf("2. Pop \n");
        printf("3. Print Stack. \n");
        printf("4. Exit \n");
        printf("Please Enter Your Choice: \n");
        printf("------------------------------------");

        printf("\n \n");
        scanf("%d", &choice);

        switch(choice) {

            case 1:
              printf("Push \n");
              printf("Please enter your value you want to push: ");
              scanf("%d", &value);
              addToStack(value);
              break;
            case 2:
              printf("You Choose 2 for Pop \n");
              popToStack();
              break;
            case 3:
              printf("You Choose 3 for Print \n");
              printStackItems();
              break;
            case 4:
              printf("You Choose 4 For Exit ... Bye Bye! \n");
              return 0;
            default :
              printf("Please Select Option 1, 2 or 3 \n");
              break;
        }
    }
}