Compilare: main.cpp: In function 'bool ingredient(char*)': main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(x);i++) ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ingrediente.size();i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp:68:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ingrediente.size();i++) ~^~~~~~~~~~~~~~~~~~~