Compilare: main.cpp: In function 'void invsort::verificare(std::vector<std::pair<int, int> >&)': main.cpp:29:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1 ; i < now.size() ; ++ i) { ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:112:19: warning: unused variable 'j' [-Wunused-variable] int n, i, j ; ^ main.cpp:114:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n) ; ^ main.cpp:117:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i].first) ; ^