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#2
西安郑鑫2014-01-17 10:26
 求 知 |
程序代码：namespace ConsoleApplication18
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("2是素数");
//fun1
int count1 = 0;
for (int i = 3; i < 1000; ++i)
{
if (IsPrime(i))
{
Console.WriteLine("{0}是素数", i);
count1++;
}
else
Console.WriteLine("{0}不是素数", i);
}
Console.WriteLine("\n\n\n\n\n");
//fun2
int count2 = 1;
int[] arr = new int[1000];
for(int i = 0; i < 1000; ++i)
arr[i] = i + 1;
foreach (int temp in arr)
{
if (temp > 2)
{
if (IsPrime(temp))
{
Console.WriteLine("{0}是素数", temp);
count2++;
}
}
}
Console.WriteLine("1000内的素数有{0}个",count2);
}
public static bool IsPrime(int num)
{
for (int loop = 2; loop <= Math.Sqrt(num); ++loop)
{
if (0 == num % loop)
return false;
}
return true;
}
}
}
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("2是素数");
//fun1
int count1 = 0;
for (int i = 3; i < 1000; ++i)
{
if (IsPrime(i))
{
Console.WriteLine("{0}是素数", i);
count1++;
}
else
Console.WriteLine("{0}不是素数", i);
}
Console.WriteLine("\n\n\n\n\n");
//fun2
int count2 = 1;
int[] arr = new int[1000];
for(int i = 0; i < 1000; ++i)
arr[i] = i + 1;
foreach (int temp in arr)
{
if (temp > 2)
{
if (IsPrime(temp))
{
Console.WriteLine("{0}是素数", temp);
count2++;
}
}
}
Console.WriteLine("1000内的素数有{0}个",count2);
}
public static bool IsPrime(int num)
{
for (int loop = 2; loop <= Math.Sqrt(num); ++loop)
{
if (0 == num % loop)
return false;
}
return true;
}
}
}
用fun2 foreach就可以把所有结果输出；只用fun1的话输出只有701到999；fun1和fun2都写的话fun1只有875到999，fun2完整输出；Console.WriteLine("2是素数")这句也没输出。
那为啥你的CMD能全显示出来
