C语言编程题目（二）

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 #include<time.h>
 4 
 5 #define MAXNUM 9999
 6 #define MINNUM 1000
 7 #define MAXLINE 300
 8 #define DIR "D:\\Rand.txt"
 9 
10 void getRand();
11 void writeDat();
12 void readDat();
13 void findDat();
14 
15 main()
16 {
17 printf("Hellow fjk\n");
18 getRand();
19 findDat();
20 }
21 
22 void getRand()
23 {
24     int  a[MAXLINE];
25     int i;
26     srand((unsigned int)time(NULL));
27 
28     for(i=0;i<MAXLINE;i++)
29         a[i]=rand()%(MAXNUM-MINNUM+1)+MINNUM;
30     writeDat(MAXLINE,a);
31 }
32 
33 void writeDat(int maxline,int Rand[])
34 {
35     FILE *fp;
36     int i;
37 
38     fp=fopen(DIR,"w+");
39     for(i=0;i<maxline;i++)
40         fprintf(fp,"%d\n",Rand[i]);
41     fclose(fp);
42 }
43 
44 void readDat(int maxline,int temp[])
45 {
46     FILE *fp;
47     int i;
48     fp=fopen(DIR,"r");
49     for(i=0;i<maxline;i++)
50     {
51     fscanf(fp,"%d",&temp[i]);
52     printf("%d\n",temp[i]);
53     }
54     fclose(fp);
55 }
56 
57 void findDat()
58 {
59     int temp[MAXLINE],b[MAXLINE],i,j,t,cnt=0;
60     int ge_wei,shi_wei,bai_wei,qian_wei;
61     FILE *fp;
62 
63     readDat(MAXLINE,temp);
64     for(i=0;i<MAXLINE;i++)
65     {
66         ge_wei=temp[i]%10;
67         shi_wei=temp[i]%10/10;
68         bai_wei=temp[i]%1000/100;
69         qian_wei=temp[i]/1000;
70 
71     if((ge_wei+qian_wei)>(bai_wei+shi_wei))
72         {
73             b[cnt]=temp[i];
74             cnt++;
75         }
76     }
77     printf("%d\n",cnt);
78     for(i=0;i<cnt-1;i++)
79             for(j=i+1;j<cnt;j++)
80                 if(b[i]>b[j])
81                 {
82                 t=b[i];
83                 b[i]=b[j];
84                 b[j]=t;
85                 }
86 
87     fp=fopen("D:\\out.txt","w+");
88     for(i=0;i<cnt;i++)
89         fprintf(fp,"%d\n",b[i]);
90     fclose(fp);
91 }