代码
#include<stdio.h>
#include<stdlib.h>
int main()
{
int a, b, c, d, i, j, F = 0, E = 0, E1 = 0, t;
for (a = 5; a <= 9; a++)
{
for (b = 0; b <= 9; b++)
{
for (c = 0; c <= 9; c++)
{
for (d = 0; d <= 9; d++)
{
int A[10] = { 0 };
t = 1;
A[0] = a; A[1] = b; A[2] = c; A[3] = d;
F = a * 1000 + b * 100 + c * 10 + d;
E = F * 2;
E1 = E;
for (i = 4; i < 9; i++)
{
A[i] = E1 % 10;
E1 = E1 / 10;
}
for (i = 0; i <8; i++)
{
for (j = i + 1; j < 9; j++)
if (A[i] == A[j])
{
t = 0;
break;
}
}
if (t == 1)
{
printf("2*%d=%d\n", F, 2 * F);
}
}
}
}
}
system("pause");
return 0;
}
运行结果
