布尔类型

布尔类型是用来存储true或者false的逻辑值的，它们的数字表示法分别是1和0。

示例：

bool a = true;
bool b = false;
bool c = 1;

内置法最多就是1字节，在逻辑表达式里可以注释，各种表达式都能用其他整数――编译器不会产生任何错误，在这种情况下，0值表示成false,其他值表示true。

示例：

   int i=5;
   double d=-2.5;
   if(i) Print("i = ",i," and is set to true");
   else Print("i = ",i," and is set to false");

   if(d) Print("d = ",d," and has the true value");
   else Print("d = ",d," and has the false value");

   i=0;
   if(i) Print("i = ",i," and has the true value");
   else Print("i = ",i," and has the false value");

   d=0.0;
   if(d) Print("d = ",d," and has the true value");
   else Print("d = ",d," and has the false value");

//--- 执行结果
//   i= 5 且有真值
//   d= -2.5 且有真值
//   i= 0 且有错误值
//   d= 0 且有错误值

另见

布尔体系操作, 优先规则

颜色型

枚举类型