c++编写计算验证两个表达式的值

设有变量说明:inta=3，b=4，c=5；计算并输出下列表达式的值:
a+b＞c＆＆b==c
！a||！c||b

if(a+b>c&&b==c)
{
  cout << "true" << endl;
}
else
{

  cout << "false" << endl;
}
if(!a || !c || b)
{
  cout << "true" << endl;
}
else
{
  cout << "false" << endl;
}

a+b>c && b==c 结果为false
!a || !c || b 结果为true