/in/foo.c: In function 'main':
/in/foo.c:6:14: warning: format '%d' expects a matching 'int *' argument [-Wformat=]
  scanf("%d%d%d",&b,&c);
              ^
/in/foo.c:7:4: warning: 'a' is used uninitialized in this function [-Wuninitialized]
  if(a<b){
    ^