Main.cc:9:17: warning: missing terminating ' character int b=x*k' ^ Main.cc:9:8: error: missing terminating ' character int b=x*k' ^ Main.cc: In function 'int main()': Main.cc:10:8: error: expected ',' or ';' before 'if' if(b%a==0){ ^ Main.cc:8:12: warning: unused variable 'a' [-Wunused-variable] int a=x-k; ^ Main.cc:9:12: warning: unused variable 'b' [-Wunused-variable] int b=x*k' ^ Main.cc:6:8: warning: unused variable 'x' [-Wunused-variable] int x; ^