Borderou de evaluare (job #614897)

Compilare: main.cpp: In function 'int main()': main.cpp:21:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 21 | while ( i < s.size() ) { | ~~^~~~~~~~~~ main.cpp:22:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 22 | while ( i < s.size() && isalpha(s[i]) ) { | ~~^~~~~~~~~~ main.cpp:30:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 30 | while ( i < s.size() && !isalpha(s[i]) ) { | ~~^~~~~~~~~~ main.cpp:50:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 50 | for ( i = 0; i < litere[index_litere].size() / 2; i++ ) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:59:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 59 | for ( i = 0; i < litere[index_litere].size() / 2; i++ ) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~