Why does “memset(arr, -1, sizeof(arr)/sizeof(int))” not clear an integer array to -1?

Question

Is it not possible to use memset on an array of integers? I tried the following memset call and didn\'t get the correct integer values in the

Answer 1

gcc provides a good array initialization shortcut

int arr[32] = {[0 ... 10] = 3, [11 ... 31] = 4}

mind the space before and after ...