Compilare: user.cpp: In function ‘int radix()’: user.cpp:28:21: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] x[(v[i] >> move) & MASK]++; ^ user.cpp:37:27: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] aux[++x[(v[i] >> move) & MASK]] = v[i]; ^ user.cpp:44:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:10:37: 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:11:39: 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:12:35: 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); ^