Question

C#怎么用二重for循环打印出腰三角形

Answer 1

楼上的，死循环。。。。。class Program
{
static void Main(string[] args)
{
Program p = new Program();
p.Print(15);
Console.ReadKey();
} private void Print(int num)
{
for (int i = 0; i < num; i++)
{
for (int j = 0; j < (num*2); j++)
{
if(j==(num-i)||j==(num+i))
{
Console.Write("*");
}
else if(i==(num-1))
{
if ((j%2) == 0)
{
Console.Write(" ");
}
else
{
Console.Write("*");
}
}
else
{
Console.Write(" ");
}
}
Console.WriteLine();
}
}
}

Answer 2

for (int i = 0; i < n;i++ )
{
for (int j = 0; j < n - i - 1; j++)
{
print(" ");//输入空格
}
for (int j = 0; j < i + 1 * (i + 1); i++)
{
print("*");//输入星号
}
print("\n");//回车
}思路是这样的 你自己修改下语法就行了 我记不得C#里的输出语法了

Answer 3

先打印空格再打印星号