句 例3.5用 switch语句实现例3.4的功能 include <iostream. h> void maino int s, i; cout<<“请输入成绩"; cIn > s: i=s/10 switch(O case 9: case 10 cout<<“优”<endl; break. case 8: cout<<“良”<<endl; break: case 7. cout<<“中”<endl; break; case 6: cout<≤“及格”<endl; break default: cout<<“不及格”<endl; break;例3.5 用switch语句实现例3.4的功能 #include <iostream.h> void main() { int s, i; cout << “请输入成绩"; cin >> s; i = s/10; switch (i) { case 9: case 10: cout << “优” << endl; break; case 8: cout << “良” << endl; break; case 7: cout << “中” << endl; break; case 6: cout << “及格” << endl; break; default: cout << “不及格”<< endl; break; } } 第3章 C++控制语 句