foo.c: In function 'main':
foo.c:11:7: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
  if((a<b&a>c)||(a<c&a>b)){
      ~^~
foo.c:11:18: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
  if((a<b&a>c)||(a<c&a>b)){
                 ~^~
foo.c:13:13: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
  }else if((b<a&b>c)||(b<c&b>a)){
            ~^~
foo.c:13:24: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
  }else if((b<a&b>c)||(b<c&b>a)){
                       ~^~
foo.c:5:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d",&a,&b,&c);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务