Compilare: main.cpp: In function 'int main()': main.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=rasp.size();i++) ~^~~~~~~~~~~~~ main.cpp:22:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<rasp.size();j++) ~^~~~~~~~~~~~ main.cpp:27:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==rasp.size()) t+=ch; ~^~~~~~~~~~~~~