Compilare: user.cpp: In function ‘int main()’: user.cpp:32:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] f1[s1[i]]++; ^ user.cpp:33:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] f2[s2[i]]++; ^ user.cpp:34:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] m[s1[i]][f1[s1[i]]]=i; ^ user.cpp:34:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] m[s1[i]][f1[s1[i]]]=i; ^ user.cpp:46:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] f2[s2[i]]++; ^ user.cpp:47:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] x=m[s2[i]][f2[s2[i]]]; ^ user.cpp:47:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] x=m[s2[i]][f2[s2[i]]]; ^ user.cpp:26:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (s1,50005,fin); ^ user.cpp:27:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (s2,50005,fin); ^