//this program dispiay te ahlphabet
#include <iostream>
using namespace std;
int main()
{
bool b;
b = false;
cout<<"b is"<<b<<"\n";
b = true;
cout<<"b is"<<b<<"\n";
//a bool value can control the if statement
if(b)cout<<"this is executed.\n";
b = false;
if(b)cout<<"this is not executed.\n";
//outcome of a relational operator is a true/false value
cout<<"10>9 is"<<(10>9)<<"\n";
return 0;
}
bool型数据演示
原文：https://www.cnblogs.com/40630762-/p/12072452.html
