length of 2d array c++
int rows = sizeof(arr) / sizeof(arr[0]); // returns rows
int col = sizeof(arr[0]) / sizeof(int); // returns collength of 2d array c++
int rows = sizeof(arr) / sizeof(arr[0]); // returns rows
int col = sizeof(arr[0]) / sizeof(int); // returns coldouble array size c++
void enlarge(int *& array, int size) {
// ^
// Use a reference to a pointer.
int *dbl = new int[size*2];
for (int i = 0; i < size; i++) {
// ^
// Iterate up to size, not size*2.
dbl[i] = array[i];
}
delete[] array;
// ^
// Use delete[], not delete.
array = dbl;
}Copyright © 2021 Codeinu
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