📅  最后修改于: 2020-10-16 06:25:33             🧑  作者: Mango
C++ switch语句从多个条件中执行一个语句。就像C++中的if-else-if阶梯语句。
switch(expression){
case value1:
//code to be executed;
break;
case value2:
//code to be executed;
break;
......
default:
//code to be executed if all cases are not matched;
break;
}
#include
using namespace std;
int main () {
int num;
cout<<"Enter a number to check grade:";
cin>>num;
switch (num)
{
case 10: cout<<"It is 10"; break;
case 20: cout<<"It is 20"; break;
case 30: cout<<"It is 30"; break;
default: cout<<"Not 10, 20 or 30"; break;
}
}
输出:
Enter a number:
10
It is 10
输出:
Enter a number:
55
Not 10, 20 or 30