C++旅程第四站——如果有if
本帖最后由 这是她 于 2020-4-23 21:13 编辑The desire to reach for the stars is ambitious.The desire to reach hearts is wise and most possible.
if if if if if if 可惜没if
#include <iostream>
using namespace std;
int main()
{
int road = 1,house = 2,gulf,breek,desert;
char season;
//if 表达式中1-->true0-->false
//第一种：只有一个if
if (road)
{
cout << "road = 1" << endl;
road -= 1;
}
//表达式中的结果为true-->执行循环体中的内容；否则-->直接跳过if语句
//第二种：if else
if (house > 0)
cout << "explore the paradise" << endl; //表达式为true执行
else
cout << "a trip to the paradise" << endl;//表达式为false执行
//第三种：if else if else
cout << "Enter a word : ";
cin >> season;
if (season == 'a')//①
cout << "a novel experience" << endl;//if ①的表达式为true，执行此代码
else
if (season == 'b')//②-----if①的表达式为false,执行此代码
cout << "a new perspective" << endl;// ②表达式值为true,执行此代码
else
cout << "the world city" << endl;//②表达式为false,执行此代码
//条件运算符
cout << "Enter two integers : ";
cin >> gulf >> breek;
cout << "The large of " << gulf << " and "<< breek ;
int rain = gulf > breek?gulf:breek;//rain的值：先判断gulf>breektrue-->执行gulffalse-->执行breek
cout << " is " << rain << endl;
//switch语句
cout << "Enter a number(1-4) : ";
cin >> desert;
switch (desert)//括号中相当于一个标签，会跳转到以下对应的代码；标签-->int char 枚举
{
case 1 :
cout << "kicking BeiJing!\n";//desert 为1-->执行此语句
break;
case 2 :
cout << "the oriental pearl!\n";//desert 为2-->执行此语句
break;
case 3 :
case 4 :
cout << "intoxicated in Guizhou!\n";//desert 为 3/4-->执行此语句
break;
default :
cout << "a true escape!";
}
return 0;
}
渣渣一枚{:10_260:}大佬们手下留情{:10_254:}
可惜没if{:10_282:}但你有建议{:10_257:}
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