#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define STACK_SIZE 10
#define STACK_EMPTY -1
void push(char [], // input/ouput - the stack
          char,  // input - data being pushed onto the stack
          int *, // input/output - pointer to the index of the top of stack
          int); // constant - maximum size of stack
char     // output - data being popped out from the stack
pop(char [], // input/output - the stack
    int *); // input/output - pointer to the index of the top of stack
void push(char stack[],char item,int *top,int max_size){
  stack[++(*top)] = item;
}
char pop(char stack[],int *top){
    return stack[(*top)--];
}
int main(){
    char s[STACK_SIZE];
    int s_top = STACK_EMPTY; // Pointer points to the index of the top of the stack
 
    char randChar = ' ';
    int i = 0;
    int j=0;
    int randNum = 0;
 
    srand(time(NULL));
 
    for (i = 0; i < STACK_SIZE; i++){
        randNum = 33 + (int)(rand() % ((126-33)+ 1 ));
        randChar = (char) randNum;
        push(s,randChar, &s_top, STACK_SIZE);
 
        printf ("Random char: %c\n", randChar);
 
    }
    printf("-----------\n");
 
    for(j=STACK_SIZE; j>0; j--){
        printf("Random chars:%c\n", pop(s, &s_top));
    }
    return 0;
}

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