求C++的基础程序?

2025-02-12 05:02:13
推荐回答(3个)
回答1:

#include
#include
main()
{
int a, b, c;
scanf_s("%d%d", &a, &b);
c = max(a,b);
printf("max=%d", c);
system("pause");
}

回答2:

楼上是C的

C++的基础程序当然是HelloWorld

#include 
using namespace std;
int main()
{
    cout<<"HelloWorld!"<    return 0;
}

回答3:

#include //标准的
//#开头的都是预处理命令
using std::cout; //using 声明
using std::endl;
int main()     //主函数,必须返回int,C++可以省略void。
{
   cout<<"hello,world"<   // << 运算符,左侧对象必须是一个ostream类型对象
   // 右侧对象是要打印的值
   //把指定的值打印到指定的ostream流中
   //这里就是发~射到标准输出(cout)。
   //这里是把一个字符串字面值常量发射到标准输出
   //endl是一个特殊值,成为操纵符
   //作用是,结束当前行(就是换行啦~)并把缓冲区的内容刷新到设备上。
   return 0;  //0表示没有任何异常的结束了
}
//剩下的还有,标准错误(cerr),clog,标准输入(cin)
//前面两个看名字也知道作用,要给你讲cout,colg,cerr的区别的话,就不是基础了。

using std::cin;  //标准输入
int main()
{
   int value = 0;  //声明并初始化一个整形(int)变量
   cin>>value;
   //>>运算符和<<运算符差不多,可以自己理解一下。
   //cin 是一个istream对象。
   //不能对常量写值
   cout<   //为什么cout即能发射字符串字面值常量又能发射整形变量呢。。
   //你知道的太多了,这是C++的运算符重载,不过这也不是基础。
   return 0;
}
//其他的基本变量类型有
//bool
//char, wchar_t, char16, char32 
//short, int, long, long long
//float, double, long double
//另外,在变量类型前面加上unsigned可以得到无符号类型。
//signed 就是带符号desu~
//char .. 的实现依赖机器
//bool类型的值只有两个 true和false
//他们都有一定的极限(存储值的),想知道的话可以向标准输出发射。
// cout<int main()
{
    cout<<"汝是基佬么(Y/N):";
    char ch = 0;
    cin>>ch;
    if(ch == 'Y'){
       cout<<"yoooooooooo"<    }
    else
      cout<<"什么?"<    return 0;
}
//剩下的还有while,for,范围for,if- else if,还有+,-,*,/,&,%,^,|运算符
//&&,||
//(¯(●●)¯)累了,你就自己去找吧。。

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