Compilare: main.cpp: In function 'int main()': main.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < s.size(); i++) ~~^~~~~~~~~~ main.cpp:16:13: warning: unused variable 'maxim' [-Wunused-variable] int maxim = 0,elem = 1,semn; ^~~~~ main.cpp:16:23: warning: unused variable 'elem' [-Wunused-variable] int maxim = 0,elem = 1,semn; ^~~~ main.cpp:16:32: warning: unused variable 'semn' [-Wunused-variable] int maxim = 0,elem = 1,semn; ^~~~ main.cpp:63:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < s.size(); i++) ~~^~~~~~~~~~ main.cpp:11:13: warning: unused variable 'cat' [-Wunused-variable] int c,i,cat = 0; ^~~