/in/foo.c: In function 'main':
/in/foo.c:5:21: warning: unused variable 'e' [-Wunused-variable]
    5 |         int a,b,c,d,e;
      |                     ^
/in/foo.c:5:19: warning: unused variable 'd' [-Wunused-variable]
    5 |         int a,b,c,d,e;
      |                   ^
/in/foo.c:5:17: warning: unused variable 'c' [-Wunused-variable]
    5 |         int a,b,c,d,e;
      |                 ^
/in/foo.c:5:15: warning: unused variable 'b' [-Wunused-variable]
    5 |         int a,b,c,d,e;
      |               ^
/in/foo.c:5:13: warning: unused variable 'a' [-Wunused-variable]
    5 |         int a,b,c,d,e;
      |             ^