Linux網絡編程：讀取txt文本數據

單行作為索引，雙行保存有數據，代碼如下

1. #include <fcntl.h>
2. #include <stdio.h>
3. #include <stdlib.h>
4. #include <string.h>
6. #define MAX_DB_SIZE 1000
8. int database[MAX_DB_SIZE];
10. const char *paramfile = "parameter.txt";
12. int get_sum_line(const char *paramfile);
13. void init_param(int database[], const char *paramfile, int sum_line);
15. int main(int argc, char *argv[])
16. {
17. int sum = get_sum_line(paramfile);
18. if (sum % 2 == 1)
19. {
20. printf("Parameter Error!\n");
21. return -1;
22. }
23. else
24. {
25. init_param(database, paramfile, sum);
26. return 0;
27. }
28. }
30. int get_sum_line(const char *paramfile)
31. {
32. char c = 0;
33. int linenum = 0;
34. FILE *fp = NULL;
35. int iNewLineFlag = 0;
37. fp = fopen(paramfile, "r");
38. if (fp == NULL)
39. return -1;
41. while ((c = fgetc(fp)) != EOF)
42. {
43. if (c == '\n')
44. {
45. linenum++;
46. iNewLineFlag = 0;
47. }
48. else
49. {
50. iNewLineFlag = 1;
51. }
52. }
54. if (iNewLineFlag)
55. linenum++;
56. printf("LineNum:%d\n", linenum);
57. fclose(fp);
58. return linenum;
59. }
61. void init_param(int database[], const char *paramfile, int sum_line)
62. {
63. FILE *fd;
64. char line[255];
66. int i = 0;
68. if (!(fd = fopen(paramfile, "r")))
69. {
70. printf("Couldn't open parameter file %s.\n", paramfile);
71. exit(-1);
72. }
74. memset(database, 0, sizeof(int) * MAX_DB_SIZE);
76. unsigned int index_tmp;
77. unsigned long data_tmp;
78. unsigned int tmp;
79. int loop_num = sum_line >> 1;
80. for (i = 0; i < loop_num; i++)
81. {
82. index_tmp = 0;
83. fgets(line, 254, fd);
84. sscanf(line, "%x", &index_tmp);
85. printf("index_tmp=%8X; ", index_tmp);
87. data_tmp = 0;
88. fgets(line, 254, fd);
89. sscanf(line, "%x", &data_tmp);
90. printf("data_tmp=%8X; \n", data_tmp);
91. }
93. fclose(fd);
94. }