Compilare: main.cpp: In function 'int main()': main.cpp:19:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (int i = 0; i < strlen(s); i++) { | ~~^~~~~~~~~~~ main.cpp:20:19: warning: array subscript has type 'char' [-Wchar-subscripts] 20 | vs[s[i]]++; | ~~~^ main.cpp:22:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (int i = 0; i < strlen(t); i++) { | ~~^~~~~~~~~~~ main.cpp:23:19: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | vt[t[i]]++; | ~~~^