Compilare: user.cpp: In function ‘int main()’: user.cpp:81:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < puncte.size(); i++) { ^ user.cpp:82:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j < puncte.size(); j++) { ^ user.cpp:62:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(IN_FILE, "r", stdin); ^ user.cpp:63:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(OUT_FILE, "w", stdout); ^ user.cpp:65:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int N; scanf("%d", &N); ^ user.cpp:72:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%f%f", &x_float, &y_float); ^