/in/foo.c: In function 'main':
/in/foo.c:27:27: warning: statement with no effect [-Wunused-value]
   27 |                 else(delta<0)
      |                     ~~~~~~^~~
/in/foo.c:27:30: error: expected ';' before '{' token
   27 |                 else(delta<0)
      |                              ^
      |                              ;
   28 |                 {
      |                 ~             
/in/foo.c:34:9: error: expected declaration or statement at end of input
   34 |         }
      |         ^
/in/foo.c:6:14: warning: unused variable 'i' [-Wunused-variable]
    6 |         char i;
      |              ^