Compilare: user.cpp: In function ‘int main()’: user.cpp:24:24: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] ++ w[(v[j] & mask) >> (B * i)], ^ user.cpp:31:23: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] c = (V[j] & mask) >> (B * i); ^ user.cpp:12:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("radixsort.in", "r", stdin); ^ user.cpp:13:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("radixsort.out", "w", stdout); ^ user.cpp:14:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &n, &a, &b, &c); ^