给个简单点的 你 ,
#include<stdio.h>
main()
{
int a;
scanf("%d",&a);
switch(a)
{
case:1; printf("1\n");break;
case:2; printf(" 1\n");
printf("121\n");break;
case:3; printf(" 1\n");
printf(" 121\n");
printf("12321\n");break;
case:4; printf(" 1\n");
printf(" 121\n");
printf(" 12321\n");
printf("1234321\n");break;
case:5; printf(" 1\n");
printf(" 121\n");
printf(" 12321\n");
printf(" 1234321\n");
printf("123454321\n");break;
case:6; printf(" 1\n");
printf(" 121\n");
printf(" 12321\n");
printf(" 1234321\n");
printf(" 123454321\n");
printf("12345654321\n");break;
case:7; printf(" 1\n");
printf(" 121\n");
printf(" 12321\n");
printf(" 1234321\n");
printf(" 123454321\n");
printf(" 12345654321\n");
printf("1234567654321\n");break;
case:8; printf(" 1\n");
printf(" 121\n");
printf(" 12321\n");
printf(" 1234321\n");
printf(" 123454321\n");
printf(" 12345654321\n");
printf(" 1234567654321\n");
printf("123456787654321\n");break;
case:9; printf(" 1\n");
printf(" 121\n");
printf(" 12321\n");
printf(" 1234321\n");
printf(" 123454321\n");
printf(" 12345654321\n");
printf(" 1234567654321\n");
printf(" 123456787654321\n");
printf("12345678987654321\n");break;
default:printf("输入1~9的数")
}
}
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本帖最后由 z1191387820 于 2010-1-12 18:51 编辑 ]