Compilare: main.cpp: In function 'int main()': main.cpp:17:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 17 | for (int i = 0; i < strlen(s); i++) | ~~^~~~~~~~~~~ main.cpp:18:20: warning: array subscript has type 'char' [-Wchar-subscripts] 18 | fr1[s[i]]++; | ~~~^ 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(t); i++) | ~~^~~~~~~~~~~ main.cpp:20:20: warning: array subscript has type 'char' [-Wchar-subscripts] 20 | fr2[t[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(s); i++) | ~~^~~~~~~~~~~ main.cpp:22:28: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | if (2 * fr1[s[i]] == fr2[s[i]]) | ~~~^ main.cpp:22:41: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | if (2 * fr1[s[i]] == fr2[s[i]]) | ~~~^ main.cpp:25:24: warning: array subscript has type 'char' [-Wchar-subscripts] 25 | fr1[s[i]] = 0; | ~~~^