/in/foo.c: In function 'prinme':
/in/foo.c:5:19: error: 'n' undeclared (first use in this function)
    5 |         for(i=0;i<n;i++)
      |                   ^
/in/foo.c:5:19: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c: In function 'main':
/in/foo.c:19:14: warning: implicit declaration of function 'prime'; did you mean 'prinme'? [-Wimplicit-function-declaration]
   19 |         flag=prime(num);
      |              ^~~~~
      |              prinme
/in/foo.c:19:20: error: 'num' undeclared (first use in this function)
   19 |         flag=prime(num);
      |                    ^~~
/in/foo.c: In function 'prinme':
/in/foo.c:14:1: warning: control reaches end of non-void function [-Wreturn-type]
   14 | }
      | ^