大一小白求教作业~

#include <time.h>
#include <iostream>
using namespace std;

//using namespace std; //命名空间

//#include <iostream>
//#include <iostream.h> 这是两个文件

int main()
{   
    int nNum = 0;
    srand( (unsigned)time( NULL ) );

    printf("请输入一个值: ");
    scanf("%d", &nNum);

    for(int i = 0; i < nNum;i++ )
    {
        //rand()%10 得到的随机数：10以内
        //得到的随机数有重复的，自己赛选一下
        //rand()%100 得到的随机数：100以内
        printf("%d\n", rand()%10 );
    }

    return 0;
}

#define NUM 9

//筛选重复的随机数
int Test(int Ary[], int nIndex, int nNum)
{
    for(int j = 0; j <= nIndex; j++)
    {
        if(nNum == Ary[j])
        {
            return 1;
        }
    }

    return 0;
}

int main()
{   
    srand( (unsigned)time( NULL ) );

    int nRandAry1[NUM] = {0};
    int i = 0;
    int j = 0;
    int nTemp = 0;

    printf("交换前: ");

    for(i = 0; i < NUM;)
    {
        //得到的随机数
        nTemp = rand()%10;

        //筛选重复的随机数
        //如果重复，重新获取
        //如果不重复，则保存到数组中
        if(Test(nRandAry1, i, nTemp) == 0)
        {
            nRandAry1[i] = nTemp;

            printf("%2d",  nRandAry1[i]);

            i++;
        }
    }

    for(i = 0; i < NUM; i++)
    {
        for(j = i + 1; j < NUM; j++)
        {
            //Ary[0] => Ary[1]
            //如果第一个元素为奇数，第二个元素为偶数， 则交换
            if( (nRandAry1[i] % 2 == 1) && (nRandAry1[j] % 2 == 0))
            {
                nTemp = nRandAry1[i];
                nRandAry1[i] = nRandAry1[j];
                nRandAry1[j] = nTemp;
                break;
            }
        }
    }

    printf("\r\n交换后: ",  nRandAry1[i]);

    for(i = 0; i < NUM; i++)
    {
        printf("%2d",  nRandAry1[i]);
    }

    printf("\r\n");

    return 0;
}