Compilare: main.cpp: In function 'int main()': main.cpp:10:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(i=0;i<strlen(x);i++) ~^~~~~~~~~~ main.cpp:11:18: warning: array subscript has type 'char' [-Wchar-subscripts] fout<<x[i]; ^ main.cpp:13:18: warning: array subscript has type 'char' [-Wchar-subscripts] fout<<x[i]; ^ main.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(i=0;i<strlen(x);i++) ~^~~~~~~~~~ main.cpp:17:18: warning: array subscript has type 'char' [-Wchar-subscripts] fout<<x[i]; ^ main.cpp:19:18: warning: array subscript has type 'char' [-Wchar-subscripts] fout<<x[i]; ^ main.cpp:22:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(i=0;i<strlen(x);i++) ~^~~~~~~~~~ main.cpp:23:18: warning: array subscript has type 'char' [-Wchar-subscripts] fout<<x[i]; ^ main.cpp:25:18: warning: array subscript has type 'char' [-Wchar-subscripts] fout<<x[i]; ^