Compilare: main.cpp: In function 'int main()': main.cpp:73:40: 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); ^ main.cpp:74:42: 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); ^ main.cpp: In function 'void counting_sort()': main.cpp:54:32: warning: iteration 254 invokes undefined behavior [-Waggressive-loop-optimizations] count[i] += count[i - 1]; ^ main.cpp:53:24: note: within this loop for (int i = 1 ; i <= 0xFF ; ++i) { ~~^~~~~~~