Compilare: user.cpp: In function ‘void placemodels(std::string, int)’: user.cpp:41:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < a.length(); i++) ^ user.cpp:38:27: warning: unused variable ‘minn’ [-Wunused-variable] int temp[100], t = 0, minn = 1000; ^ user.cpp: In function ‘int checkequal(int)’: user.cpp:72:9: warning: variable ‘first’ set but not used [-Wunused-but-set-variable] int first, tsum = 0, sum = 0; ^ user.cpp: In function ‘int getvalue(char)’: user.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type] } ^