poj1555--Polynomial Showdown (水题）

根据题目意思来就行了

View Code 
 1 //Accepted    392K    0MS    G++    1292B
 2 #include <stdio.h>
 3 int main(void)
 4 {
 5     int a[9];
 6     int sum;
 7     while(scanf("%d",&a[8])==1)
 8     {
 9         sum = a[8];
10         for(int i=7;i>=0;--i)
11         {
12             scanf("%d",&a[i]);
13             sum += a[i];
14         }
15         if(sum == 0)
16         {
17             printf("0\n");
18             continue;
19         }
20         int i = 8;
21         while(a[i] == 0) --i ;
22         if(i == 0)
23         {
24             printf("%d\n",a[0]);
25         }
26         else if(i == 1)
27         {
28             if(a[1] == 1) printf("x");
29             else if(a[1] == -1) printf("-x");
30             else  printf("%dx",a[1]);
31         
32             if(a[0] > 0) printf(" + %d\n",a[0]);
33             else if(a[0] < 0) printf(" - %d\n",a[0] * (-1));
34             else puts("");
35         }
36         else
37         {
38             if(a[i] == 1) printf("x^%d",i);
39             else if(a[i]==-1) printf("-x^%d",i);
40             else printf("%dx^%d",a[i],i);
41 
42             for(i = i -1 ; i > 1; --i)
43             {
44                 if(a[i] != 0)
45                 {
46                     if(a[i] == 1) printf(" + x^%d",i);
47                     else if(a[i] == -1) printf(" - x^%d",i);
48                     else if(a[i] > 1) printf(" + %dx^%d",a[i],i);
49                     else printf(" - %dx^%d",a[i] * (-1),i);
50                 }
51             }
52             if(a[1] != 0)
53             {
54                 if(a[1] == 1) printf(" + x");
55                 else if(a[1] == -1) printf(" - x");
56                 else if(a[1] > 1) printf(" + %dx",a[1]);
57                 else printf(" - %dx",a[1] * (-1));
58             }
59             if(a[0] != 0)
60             {
61                 if(a[0] > 0) printf(" + %d",a[0]);
62                 else printf(" - %d",a[0] * (-1));
63             }
64             puts("");
65         }
66     }
67 }
posted @ 2012-09-16 15:18  Wheat″  阅读(193)  评论(0)    收藏  举报