Question

I have a variable:

unsigned int* data = (unsigned int*)malloc(height * width)

I want to set same int to all array values.
I can’t use memset because it works with bytes.

How can i do that?

Answer 1

Using C++:

std::vector<unsigned int> data(height * width, value);

If you need to pass the data to some legacy C function that expects a pointer, you can use &data[0] or &data.front() to get a pointer to the contiguous data in a well-defined manner.

If you absolutely insist on using pointers throughout (but you have no technical reason to do this, and I wouldn’t accept it in code review!), you can use std::fill to fill the range:

unsigned int* data = new int[height * width];
std::fill(data, data + height * width, value);