Mã chấm: 13951

Main.c: In function ‘f’:
Main.c:6:5: error: expected expression before ‘)’ token
  if()
     ^
Main.c:5:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&a,&b,&c);
  ^~~~~~~~~~~~~~~~~~~~~~~~
Main.c:9:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
Main.c: In function ‘main’:
Main.c:12:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&x);
  ^~~~~~~~~~~~~~