/in/foo.c: In function 'main':
/in/foo.c:7:15: warning: unused variable 'j' [-Wunused-variable]
    7 |         int i,j;
      |               ^
/in/foo.c:7:13: warning: unused variable 'i' [-Wunused-variable]
    7 |         int i,j;
      |             ^
/in/foo.c:6:13: warning: variable 'new_arr' set but not used [-Wunused-but-set-variable]
    6 |         int new_arr[3][2];
      |             ^~~~~~~
/in/foo.c: At top level:
/in/foo.c:21:1: error: expected identifier or '(' before 'for'
   21 | for(int i=0;i<3;i++)
      | ^~~
/in/foo.c:21:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
   21 | for(int i=0;i<3;i++)
      |              ^
/in/foo.c:21:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token
   21 | for(int i=0;i<3;i++)
      |                  ^~