Problem	calc
User	om2024
Submission Time	2025-08-28 17:05:55
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

calc.cpp: In function ‘int main()’:
calc.cpp:12:17: error: request for member ‘push_back’ in ‘arr’, which is of non-class type ‘std::vector<int> [N]’
12 | arr.push_back(y);
| ^~~~~~~~~
calc.cpp:13:43: error: request for member ‘size’ in ‘arr’, which is of non-class type ‘std::vector<int> [N]’
13 | } else if (input == "UNDO" && arr.size()!=0) {
| ^~~~
calc.cpp:14:17: error: request for member ‘pop_back’ in ‘arr’, which is of non-class type ‘std::vector<int> [N]’
14 | arr.pop_back();
| ^~~~~~~~
calc.cpp:19:25: error: request for member ‘size’ in ‘arr’, which is of non-class type ‘std::vector<int> [N]’
19 | for (int i=0; i<arr.size();i++) {
| ^~~~
calc.cpp:20:12: error: no match for ‘operator+=’ (operand types are ‘int’ and ‘std::vector<int>’)
2