Compilare: main.cpp: In function 'int termen(int, std::vector<int>&)': main.cpp:32:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | while(ind < expr[func].size() && expr[func][ind] == '*') { | ~~~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int eval(int, std::vector<int>&)': main.cpp:41:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | while(ind < expr[func].size() && (expr[func][ind] == '+' || expr[func][ind] == '-')) { | ~~~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void read()': main.cpp:77:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(int i = 2; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:82:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | while(i < s.size() && s[i] != '=') | ~~^~~~~~~~~~ main.cpp:85:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | while(i < s.size()) { | ~~^~~~~~~~~~