Compilare: main.cpp: In function 'int main()': main.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:52:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:64:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:73:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | if (i == s.size()) fout << p->fr << "\n"; | ~~^~~~~~~~~~~ main.cpp:78:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for (j = 1; j <= s.size(); j++) | ~~^~~~~~~~~~~ main.cpp:77:17: warning: unused variable 'val' [-Wunused-variable] 77 | int val = 0, counter = 0, broken = 0; | ^~~ main.cpp:77:26: warning: unused variable 'counter' [-Wunused-variable] 77 | int val = 0, counter = 0, broken = 0; | ^~~~~~~