foo.c: In function 'main':
foo.c:6:11: error: expected expression before '%' token
    6 |     scanf(%d,%d,&year,&month)
      |           ^
foo.c:6:30: error: expected ';' before '}' token
    6 |     scanf(%d,%d,&year,&month)
      |                              ^
      |                              ;
    7 | }
      | ~                             
foo.c:4:18: warning: unused variable 'month' [-Wunused-variable]
    4 | {       int year,month;
      |                  ^~~~~
foo.c:4:13: warning: unused variable 'year' [-Wunused-variable]
    4 | {       int year,month;
      |             ^~~~
foo.c: At top level:
foo.c:8:9: error: expected identifier or '(' before 'return'
    8 |         return 0;
      |         ^~~~~~

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