Compilare: main.cpp: In function 'int main()': main.cpp:20:18: warning: array subscript has type 'char' [-Wchar-subscripts] v[i][n[i]]=','; ^ main.cpp:22:18: warning: array subscript has type 'char' [-Wchar-subscripts] v[i][n[i]]='}'; ^ main.cpp:7:7: warning: unused variable 'c' [-Wunused-variable] int c, i, j, k, ct, x, y, nch, n1; ^ main.cpp:7:19: warning: unused variable 'ct' [-Wunused-variable] int c, i, j, k, ct, x, y, nch, n1; ^~ main.cpp:7:29: warning: unused variable 'nch' [-Wunused-variable] int c, i, j, k, ct, x, y, nch, n1; ^~~ main.cpp:41:4: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] x+=y; ~^~~ main.cpp:41:4: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]