Compilare: main.cpp: In function 'int main()': main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp: In function 'int c(char)': main.cpp:12:1: warning: control reaches end of non-void function [-Wreturn-type] 12 | } | ^