View Compilation Error

0_0_35279922_49.c: In function 'main':
0_0_35279922_49.c:8:6: error: conflicting types for 'a'
  int a[12]={31,29,31,30,31,30,31,31,30,31,30,31};
      ^
0_0_35279922_49.c:5:7: note: previous declaration of 'a' was here
  char a,b;
       ^
0_0_35279922_49.c:9:6: error: conflicting types for 'b'
  int b[12]={31,28,31,30,31,30,31,31,30,31,30,31};
      ^
0_0_35279922_49.c:5:9: note: previous declaration of 'b' was here
  char a,b;
         ^