Main.cc:1:1: error: ‘include’ does not name a type; did you mean ‘__has_include’? include ^~~~~~~ __has_include Main.cc: In function ‘int main()’: Main.cc:4:8: error: ‘cin’ was not declared in this scope int n; cin>>n; for(int i=1;i<=n;i++) { ^~~ Main.cc:4:8: note: suggested alternative: ‘main’ int n; cin>>n; for(int i=1;i<=n;i++) { ^~~ main Main.cc:26:1: error: ‘printf’ was not declared in this scope printf("%d %d\n",AnsL,AnsR); ^~~~~~ Main.cc:26:1: note: suggested alternative: ‘int’ printf("%d %d\n",AnsL,AnsR); ^~~~~~ int