Compilare: main.cpp: In function 'void ins(str*, int, int)': main.cpp:30:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | if (poz == s.size()) | ~~~~^~~~~~~~~~~ main.cpp: In function 'void del(str*, int)': main.cpp:48:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | if (poz == s.size()) | ~~~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:82:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for (int j = 0; j < s.size(); j++) | ~~^~~~~~~~~~ main.cpp:92:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for (int j = 0; j < s.size(); j++) | ~~^~~~~~~~~~