Compilare: main.cpp: In function 'bool verificare(std::__cxx11::string, std::__cxx11::string)': main.cpp:37:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a.length();i++) ~^~~~~~~~~~~ main.cpp:41:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<b.length();i++) ~^~~~~~~~~~~ main.cpp:28:11: warning: unused variable 'j' [-Wunused-variable] int i,j,va[28],vb[28]; ^ main.cpp: In function 'int main()': main.cpp:60:11: warning: unused variable 'x' [-Wunused-variable] int i,x,n,y; ^ main.cpp:60:15: warning: unused variable 'y' [-Wunused-variable] int i,x,n,y; ^