Main.cc:3:1: error: 'strang' does not name a type strang a; ^ Main.cc: In function 'bool f(int, int)': Main.cc:7:6: error: 's' was not declared in this scope if(s[i+l]l=s[r-l]){ ^ Main.cc:7:12: error: expected ')' before 'l' if(s[i+l]l=s[r-l]){ ^ Main.cc: In function 'int main()': Main.cc:15:7: error: 'a' was not declared in this scope cin>>a; ^