Compilare: main.cpp: In function 'int main()': main.cpp:12:24: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int i = 0;i<strlen(s);i++) | ~^~~~~~~~~~ main.cpp:13:20: warning: array subscript has type 'char' [-Wchar-subscripts] 13 | fr1[s[i]]++; | ~~~^ main.cpp:14:24: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i = 0;i<strlen(t);i++) | ~^~~~~~~~~~ main.cpp:15:20: warning: array subscript has type 'char' [-Wchar-subscripts] 15 | fr2[t[i]]++; | ~~~^