Compilare: user.cpp: In function ‘int main()’: user.cpp:17:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b[i]==' ') ^ user.cpp:29:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b[i]=='(') ^ user.cpp:39:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b[i]==')') ^ user.cpp:46:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] a=b[i]; ^ user.cpp:53:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] a=b[i]; ^ user.cpp:65:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(b[i]>='a' and b[i]<='z') ^ user.cpp:65:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(b[i]>='a' and b[i]<='z') ^ user.cpp:67:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] m[line][column]=b[i]; ^ user.cpp:71:24: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] m[line][column]=NULL; ^ user.cpp:72:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] a=b[i]; ^ user.cpp:77:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] a=b[i]; ^ user.cpp:89:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(strcmp(m[i],m[j])==0) ^ user.cpp:91:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i]+=v[j]; ^ user.cpp:106:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(strcmp(m[i],m[j])==1) ^ user.cpp:108:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] swap(m[i],m[j]); ^ user.cpp:109:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] swap(v[i],v[j]); ^ user.cpp:116:17: warning: array subscript has type ‘char’ [-Wchar-subscripts]