/in/foo.c: In function 'main':
/in/foo.c:4:23: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    4 |         int n1, n2, n1<10000, n2<10000;
      |                       ^
/in/foo.c:5:17: error: 'MAX_SIZE' undeclared (first use in this function)
    5 |         int id1[MAX_SIZE], id2[MAX_SIZE];
      |                 ^~~~~~~~
/in/foo.c:5:17: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:6:19: error: 'MAX_ID' undeclared (first use in this function)
    6 |     int isPresent[MAX_ID] = {0};
      |                   ^~~~~~
/in/foo.c:9:22: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    9 |         for(int i=0,i<n1,i++)
      |                      ^
/in/foo.c:15:5: error: expected expression before '}' token
   15 |     }
      |     ^
/in/foo.c:15:5: error: expected expression before '}' token
/in/foo.c:15:5: error: expected expression before '}' token
/in/foo.c:9:17: warning: unused variable 'i' [-Wunused-variable]
    9 |         for(int i=0,i<n1,i++)
      |                 ^
/in/foo.c:7:9: warning: unused variable 'count' [-Wunused-variable]
    7 |     int count = 0;
      |         ^~~~~
/in/foo.c:6:9: warning: unused variable 'isPresent' [-Wunused-variable]
    6 |     int isPresent[MAX_ID] = {0};
      |         ^~~~~~~~~
/in/foo.c:5:28: warning: unused variable 'id2' [-Wunused-variable]
    5 |         int id1[MAX_SIZE], id2[MAX_SIZE];
      |                            ^~~
/in/foo.c:5:13: warning: unused variable 'id1' [-Wunused-variable]
    5 |         int id1[MAX_SIZE], id2[MAX_SIZE];
      |             ^~~
/in/foo.c: At top level:
/in/foo.c:16:9: error: expected identifier or '(' before 'for'
   16 |         for(int i=0,i<n2,i++)
      |         ^~~
/in/foo.c:22:9: error: expected identifier or '(' before '}' token
   22 |         }
      |         ^
/in/foo.c:23:13: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<<' token
   23 |         cout<<"%d\n", count<<endl;
      |             ^~
/in/foo.c:24:5: error: expected identifier or '(' before 'return'
   24 |     return 0;
      |     ^~~~~~
/in/foo.c:25:1: error: expected identifier or '(' before '}' token
   25 | }
      | ^