Compilare: user.cpp: In function ‘void radixSort(int, int, int)’: user.cpp:26:24: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] end[(v[i] >> bits) & MASK]++; ^ user.cpp:38:35: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] int bucket = (elem >> bits) & MASK; ^ user.cpp:43:33: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] bucket = (elem >> bits) & MASK; ^ user.cpp: In function ‘int main()’: user.cpp:65:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d%d", &n, &a, &b, &c); ^