定义 :一个或几个循环放在另一个循环体内。

案例:

生成实心直角三角形 :

 1 #include <iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int i = 1, n = 1,m;
 6     cout << "请输入你所需要生成的直角三角形的高" << endl;
 7     cin >> m;
 8     cout << endl;
 9     while ( n <= m)
10     {
11         for (int i = 1; i <= n; i++)
12         {
13             cout << "*";
14         }
15         n++;
16         cout << endl;
17     }
18     return 0;
19 }

 

 

 

 

 

生成九九乘法表:

 1 #include <iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int i = 1;
 6     while (i <= 9)
 7     {
 8         for (int n = 1; n <= i; n++)
 9         {
10             cout << n << "*" << i  << "=" << n * i << " ";
11         }
12         cout << endl;
13         i++;
14     }
15 }
 1 #include<iostream>
 2 using namespace std;
 3 int main() {
 4     for (int a = 1; a <= 9; a++)
 5     {
 6         for (int b = 1; b <= a; b++)
 7         {
 8             cout << a << "*" << b << "=" << a * b << " ";
 9         }
10         cout << endl;
11     }
12     return 0;
13 }

 

 

posted on 2022-07-21 17:26  在野武将  阅读(118)  评论(0)    收藏  举报