How to create array with not constant size in cpp

size_t n;
std::cin >> n;
int* arr = new int[n];
...
// Control flow must reach exactly one corresponding delete[] !!!
delete[] arr;

size_t n;
std::cin >> n;
auto arr = std::make_unique<int[]>(n);

Similar codes

0 vote245 views1 answer
Patterns in c++
C++
0 vote241 views1 answer
Compile c++ MPI Program
C++
0 vote244 views1 answer
123213
C++
5 votes227 views2 answers
C++ return multiple values
C++
8 votes292 views10 answers
Javascript loop array
C++
0 vote220 views1 answer
Square gcode
C++
19 votes220 views3 answers
File reading c++
C++
0 vote256 views1 answer
C++ write number to registry
C++
1 vote234 views1 answer
How to make sure the user inputs a int and not anything else c++
C++
1 vote259 views2 answers
What is c++
C++