Compilare: main.cpp: In function 'int main()': main.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp:41:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp: In function 'int c(char)': main.cpp:13:1: warning: control reaches end of non-void function [-Wreturn-type] 13 | } | ^