problem

Tried to print empty array, but the result wasn’t empty.

int ctr[10];

for(int i = 0; i < 10; ++i){
    cout << ctr[i] << '\n';
}

solution

C/C++ arrays are not initialized upon declaration. Initialize at least 1 element to set the others as 0.

int ctr[10] = {0};

for(int i = 0; i < 10; ++i){
    cout << ctr[i] << '\n';
}