Compilare: user.cpp: In function ‘int main()’: user.cpp:25:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (i%10==2) ^ user.cpp:30:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (i%10==3) ^ user.cpp:35:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (i%10==7) ^ user.cpp:40:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (i%10==8) ^ user.cpp:64:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] fout<<v[nr]<<"\n"; ^ user.cpp:9:9: warning: unused variable ‘r’ [-Wunused-variable] int r=1; ^ user.cpp:13:9: warning: unused variable ‘x’ [-Wunused-variable] int x,y,s=0; ^ user.cpp:13:11: warning: unused variable ‘y’ [-Wunused-variable] int x,y,s=0; ^ user.cpp:13:13: warning: unused variable ‘s’ [-Wunused-variable] int x,y,s=0; ^