#include <stdio.h> #include <stdint.h> #include <string.h> #define MAX 10 int cnt=0; void process_stack(int n) { // Your logic here int arr[MAX],top=-1,val; char cmd[10]; for(int i=0;i<n;i++) { scanf("%s",cmd); if (strcmp(cmd, "push") == 0) { scanf("%d",&val); if(top>=MAX-1) { printf("Stack Overflow\n"); } else{ arr[++top]=val; } } else if (strcmp(cmd, "pop") == 0) { if(top==-1) { printf("Stack Underflow\n"); } else { printf("%d\n",arr[top--]); } } } } int main() { int n; scanf("%d", &n); getchar(); // Consume newline after number process_stack(n); return 0; }
Test Cases
Test Results
Input
5 push 10 push 20 pop pop pop
Expected Output
20 10 Stack Underflow