Compilare: user.cpp: In function ‘int main()’: user.cpp:17:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[i][s[i]]=i; ^ user.cpp:25:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] suma=suma+q-a[q][c[j][k]]; ^ user.cpp:26:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] q=a[q][c[j][k]]-1; ^ user.cpp:29:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (nr==strlen(c[j])) ^