Compilare: main.cpp: In function 'int getx()': main.cpp:78:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p < s.size() && s[p] == ' ') ~~^~~~~~~~~~ main.cpp:80:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p >= s.size()){ ~~^~~~~~~~~~~ main.cpp:86:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p < s.size() && s[p] >= '0' && s[p] <= '9'){ ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:131:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<drept.size();i++) ~^~~~~~~~~~~~~