static void Main(string[] args)
{
int num;
int i = 1;
int j = 1;
int x = 1;
for (i = 1; i <= 5;i++ )
{
num = i * i;
Console.WriteLine(num);
}
while (j < 6)
{
num = i * i;
Console.WriteLine(num);
i++;
}
do
{
num = i * i;
Console.WriteLine(num);
i++;
} while (x < 6);
}
題2
public static bool character(string input)
{
if (input.Length != 5)
{
Console.WriteLine("輸入長度不符合,請重新輸入!");
return false;
}
else if (input == input.ToLower())
{
Console.WriteLine("請輸入大寫字母!");
return false;
}
else
{
Console.WriteLine("輸入成功!");
return true;
}
}
static void Main(string[] args)
{
for (; ; )
{
string input;
Console.WriteLine("請輸入五個大寫字母");
input = Console.ReadLine();
if (character(input))
{
break;
}
}
}
題3
static void Main(string[] args)
{
for (; ; )
{
int num;
Console.WriteLine("請輸入壹個數:");
num = int.Parse(Console.ReadLine());
if (num > 0)
{
for (int i = 1; i <= num; i++)
{
Console.Write(i + " ");
}
Console.WriteLine();
}
else
{
Console.WriteLine("程序退出!");
break;
}
}
}
題4 俺數學醜...........汗壹個..........