#include <stdio.h>
#include <stdint.h>
#include <string.h>
#define MAX 10
void push(int stack[], int *top, int val){
if(*top == MAX){
printf("Stack Overflow\n");
}
else{
stack[*top] = val;
(*top)++;
}
}
void pop(int stack[], int *top){
if(*top == 0){
printf("Stack Underflow\n");
}
else{
(*top)--;
printf("%d\n", stack[*top]);
}
}
void process_stack(int n) {
// Your logic here
int top = 0;
char input[10];
int stack[MAX];
for(int i = 0; i<n ;i++){
scanf("%s",&input);
int val;
if(strcmp(input,"push") == 0){
scanf("%d",&val);
push(stack,&top, val);
}
else{
pop(stack,&top);
}
}
}
int main() {
int n;
scanf("%d", &n);
getchar(); // Consume newline after number
process_stack(n);
return 0;
}
Input
5 push 10 push 20 pop pop pop
Expected Output
20 10 Stack Underflow