#include <iostream>

using namespace std;

把bool值显示为true或false

1. 以下三条输出语句分别输出什幺？

char str1[] = "abc";

char str2[] = "abc";

const char str3[] = "abc";

const char str4[] = "abc";

const char str5 = "abc";

const char str6 = "abc";

cout << boolalpha << ( str1==str2 ) << endl; // 输出什幺？false

cout << boolalpha << ( str3==str4 ) << endl; // 输出什幺？false

cout << boolalpha << ( str5==str6 ) << endl; // 输出什幺？true

char const p; //常指针或者指针常量，p的值不可以修改

char const p;//指向常量的指针或常量指针，指向的常量值不可以改

const char p; //同char const p

str1,str2,str3,str4是数组变数，它们有各自的记忆体空间；

而str5,str6是指针，它们指向相同的常量区域

#include <iostream>

using namespace std;

int main()

{

bool b=true;

cout <<"b="<< b << endl;

b =false;

cout <<"b="<< b << endl;

cout <<"b="<< boolalpha << b << endl;

cout << b << endl;

bool a =true;

cout <<"a = "<< a << endl;

}

输出结果

b=1

b=0

b=false

0

a =1