Borderou de evaluare (job #726248)

Compilare: main.cpp: In function 'int main()': main.cpp:18:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 18 | for(int i=0; i<s.size(); i++) | ~^~~~~~~~~ main.cpp:12:13: warning: unused variable 'poz' [-Wunused-variable] 12 | int poz=0; | ^~~ main.cpp:15:13: warning: 'ch' is used uninitialized [-Wuninitialized] 15 | while(ch!=EOF) | ^ main.cpp:14:10: note: 'ch' declared here 14 | char ch; | ^~