/in/foo.c: In function 'main':
/in/foo.c:5:16: warning: zero-length gnu_printf format string [-Wformat-zero-length]
    5 |         printf("");
      |                ^~
/in/foo.c:6:26: error: '$x' undeclared (first use in this function); did you mean 'x'?
    6 |         scanf("%d,%d,%d",$x,&y,&z);
      |                          ^~
      |                          x
/in/foo.c:6:26: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:8:23: error: 'Y' undeclared (first use in this function)
    8 |         printf("%d",x+Y+Z);
      |                       ^
/in/foo.c:8:25: error: 'Z' undeclared (first use in this function)
    8 |         printf("%d",x+Y+Z);
      |                         ^
/in/foo.c:9:9: error: 'else' without a previous 'if'
    9 |         else
      |         ^~~~