Compilare: main.cpp: In function 'int main()': main.cpp:18:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i = 0; i < strlen(s); i++) { | ~~^~~~~~~~~~~ main.cpp:19:19: warning: array subscript has type 'char' [-Wchar-subscripts] 19 | vs[s[i]]++; | ~~~^ main.cpp:21:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (int i = 0; i < strlen(t); i++) { | ~~^~~~~~~~~~~ main.cpp:22:19: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | vt[t[i]]++; | ~~~^