Compilare: main.cpp: In function 'int main()': main.cpp:21:14: warning: unused variable 'ch' [-Wunused-variable] 21 | char ch = (char)(i); | ^~ main.cpp:26:14: warning: unused variable 'ch' [-Wunused-variable] 26 | char ch = (char)(i); | ^~ main.cpp:31:14: warning: unused variable 'ch' [-Wunused-variable] 31 | char ch = (char)(i); | ^~ main.cpp:34:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (i = 0;i < strlen(A);i++) | ~~^~~~~~~~~~~ main.cpp:43:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (i = 0;i < strlen(A);i++) | ~~^~~~~~~~~~~ main.cpp:50:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (i = strlen(A);i < strlen(B);i++) | ~~^~~~~~~~~~~