Compilare: main.cpp: In function 'int main()': main.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i = 0; i < strlen(arr); i++){ | ~~^~~~~~~~~~~~~ main.cpp:22:83: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 22 | while(arr[i] != '(' && isalpha(arr[i]) == false && arr[i] != ')' && i < strlen(arr)){ | ~~^~~~~~~~~~~~~ main.cpp:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(int i = 0; i < strarr.size(); i+=2){ | ~~^~~~~~~~~~~~~~~ main.cpp:46:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(int j = i+2; j < strarr.size(); j+=2){ | ~~^~~~~~~~~~~~~~~ main.cpp:60:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int i = 0; i < val1.size() - 1; i++){ | ~~^~~~~~~~~~~~~~~~~ main.cpp:69:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for(int i = 0; i < val1.size(); i++){ | ~~^~~~~~~~~~~~~