C#开发课程里的4-9编程题怎么做？

Answer 1

for (int y = 1; y <= 7; y++)             {                 for (int x = 1; x <=y; x++)                 {                     Console.Write(x);                 }                 Console.WriteLine();             }

Answer 2

这么简单的问题，你有时间提问。还不如放到编辑器里面运行一下！