Main.cc: In function 'int main()': Main.cc:8:9: error: expected ';' before 'a' cin a; ^ Main.cc:8:10: warning: statement has no effect [-Wunused-value] cin a; ^ Main.cc:10:9: error: expected ';' before 'b' cin b; ^ Main.cc:10:10: warning: statement has no effect [-Wunused-value] cin b; ^