foo.c:1:8: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘<’ token
    1 | include<bits/stdc++.h>using namespace std;
      |        ^
foo.c: In function ‘main’:
foo.c:5:9: error: ‘cin’ undeclared (first use in this function)
    5 |         cin>>n;
      |         ^~~
foo.c:5:9: note: each undeclared identifier is reported only once for each function it appears in
foo.c:14:9: error: ‘cout’ undeclared (first use in this function)
   14 |         cout<<y<<" "<<x;
      |         ^~~~