How can I assign a value to a random element of 2D array in C

Question

For example, there is an array like this ==> array[10][10]

I want to pick a random element of this array like array[5][7] and assign it to 0.

How can I do it?

• IrAM: if its random array[5][7] = 0; thats it.
• willwrighteng: Does this answer your question? Weighted random selection from array

Answer 1

Should be something like:

srand((unsigned) time()); // For different result every second
int x = rand() % 10;
int y = rand() % 10;
array[x][y] = 0;