Compilare: user.cpp: In function ‘int lscm(char*, char*)’: user.cpp:23:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (A[0]==B[i]) ^ user.cpp:24:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[0][i]=1; ^ user.cpp:26:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[0][i]=M[0][i-1]; ^ user.cpp:28:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (A[i]==B[0]) ^ user.cpp:29:7: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][0]=1; ^ user.cpp:31:7: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][0]=M[i-1][0]; ^ user.cpp:34:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (A[i]==B[j]) ^ user.cpp:34:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (A[i]==B[j]) ^ user.cpp:35:8: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][j]=1+M[i-1][j-1]; ^ user.cpp:35:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][j]=1+M[i-1][j-1]; ^ user.cpp:37:8: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][j]=max(M[i-1][j],M[i][j-1]); ^ user.cpp:37:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][j]=max(M[i-1][j],M[i][j-1]); ^ user.cpp:37:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][j]=max(M[i-1][j],M[i][j-1]); ^ user.cpp:37:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] M[i][j]=max(M[i-1][j],M[i][j-1]); ^ user.cpp: In function ‘int main()’: user.cpp:51:15: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] A[n][lung-1]=NULL; ^ user.cpp:49:21: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(A[n],102,fi); ^