求符合给定条件的整数集

/*
    求符合给定条件的整数集
*/

#include <stdio.h>

int main()
{
    int n;
    int cnt = 0;
    int hundred, ten, unit;

    scanf_s("%d", &n);
    
    for (int i = 100; i < 1000; i++)
    {
        hundred = i / 100;
        ten = i % 100 / 10;
        unit = i % 10;

        if (hundred == ten || ten == unit || hundred == unit)
        {
            continue;
        }

        if (hundred >= n && hundred <= n+3)
        {
            if (ten >= n && ten <= n + 3)
            {
                if(unit >= n && unit <= n + 3)
                {
                    printf("%d", i);
                    cnt++;
                    if (cnt < 6)
                    {
                        printf(" ");
                    }
                    else
                    {
                        if (cnt == 6)
                        {
                            printf("
");
                            cnt = 0;
                        }
                    }
                }
            }            
        }
    }

    return 0;
}

 修改版

#include <stdio.h>

int main()
{
    int a;
    scanf_s("%d", &a);
    int i, j, k;
    int cnt = 0;

    for (i = a; i <= a+3; i++)
    {
        for (j = a; j <= a + 3; j++)
        {
            for (k = a; k <= a + 3; k++)
            {
                if (i != j && j != k && i != k)
                {
                    printf("%d", i * 100 + j * 10 + k);
                    cnt++;
                    if (cnt < 6)
                    {
                        printf(" ");
                    }
                    else
                    {
                        if (cnt == 6)
                        {
                            printf("
");
                            cnt = 0;
                        }
                    }
                }
            }
        }
    }

    return 0;
}