/in/foo.c: In function 'main':
/in/foo.c:13:13: error: conflicting types for 't'; have 'int'
   13 |         int t=n+m;
      |             ^
/in/foo.c:7:13: note: previous definition of 't' with type 'int[30]'
    7 |         int t[30]={0};
      |             ^
/in/foo.c:13:13: warning: unused variable 't' [-Wunused-variable]
   13 |         int t=n+m;
      |             ^
/in/foo.c:9: confused by earlier errors, bailing out