/in/foo.c: In function 'monthf':
/in/foo.c:69:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before '-' token
  int months1[]-{2,4,6,9,11,11,11};
               ^
/in/foo.c:69:16: error: expected expression before '{' token
  int months1[]-{2,4,6,9,11,11,11};
                ^
/in/foo.c:84:15: error: 'months1' undeclared (first use in this function)
     if(month==months1[i])
               ^~~~~~~
/in/foo.c:84:15: note: each undeclared identifier is reported only once for each function it appears in