foo.cc: In function 'int main()':
foo.cc:6:2: error: 'cin' was not declared in this scope
    6 |  cin<<x;
      |  ^~~
foo.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    1 | #include <stdio.h>
  +++ |+#include <iostream>
    2 | using namespace std;
foo.cc:10:4: error: 'cout' was not declared in this scope
   10 |    cout>>x;
      |    ^~~~
foo.cc:10:4: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
foo.cc:11:4: error: expected '}' before 'else'
   11 |    else
      |    ^~~~
foo.cc:8:13: note: to match this '{'
    8 |   if(x%2==0){
      |             ^
foo.cc:13:4: error: 'cout' was not declared in this scope
   13 |    cout>>x;
      |    ^~~~
foo.cc:13:4: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
foo.cc:5:8: warning: unused variable 'y' [-Wunused-variable]
    5 |  int x,y;
      |        ^
foo.cc: At global scope:
foo.cc:16:11: error: expected constructor, destructor, or type conversion before '(' token
   16 |     printf("hello, world\n");
      |           ^
foo.cc:17:2: error: expected unqualified-id before 'return'
   17 |  return 0;
      |  ^~~~~~
foo.cc:18:1: error: expected declaration before '}' token
   18 | }
      | ^

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