Compilare: user.cpp: In function ‘int isInHash(int)’: user.cpp:22:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < H[key].numbers.size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘void removeNumber(int)’: user.cpp:35:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < H[key].numbers.size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘void update(int, int)’: user.cpp:44:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < H[key].numbers.size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:69:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i + l <= elements.size()) { ~~~~~~^~~~~~~~~~~~~~~~~~ user.cpp:97:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j >= elements.size()) { ~~^~~~~~~~~~~~~~~~~~ user.cpp:101:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (counter >= l || j >= elements.size()){ ~~^~~~~~~~~~~~~~~~~~ user.cpp:62:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(rFile, "%d %d %d", &n, &l, &g); ^ user.cpp:64:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(rFile, "%d", &x); ^