/in/foo.c: In function 'main':
/in/foo.c:5:11: error: 'true' undeclared (first use in this function)
    5 |     while(true){new double();};
      |           ^~~~
/in/foo.c:2:1: note: 'true' is defined in header '<stdbool.h>'; did you forget to '#include <stdbool.h>'?
    1 | #include <stdio.h>
  +++ |+#include <stdbool.h>
    2 | 
/in/foo.c:5:11: note: each undeclared identifier is reported only once for each function it appears in
    5 |     while(true){new double();};
      |           ^~~~
/in/foo.c:5:17: error: 'new' undeclared (first use in this function)
    5 |     while(true){new double();};
      |                 ^~~
/in/foo.c:5:20: error: expected ';' before 'double'
    5 |     while(true){new double();};
      |                    ^~~~~~~
      |                    ;