Compilare: main.cpp: In function 'int main()': main.cpp:17:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1; i<n; ++i) ^~~ main.cpp:21:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' bool has_digit = true; ^~~~ main.cpp:39:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<buckets[i].size(); ++j) ~^~~~~~~~~~~~~~~~~~ main.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); ^ main.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); ^ main.cpp:14:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:15:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &a, &b, &c); ^