Yurttas/PL/DBL/oracle/F/03/PC/Printer-q-all.pc
Revision as of 00:02, 5 November 2013 by MassBot1 (talk | contribs) (Created page with "<syntaxhighlight lang="text" line start="1" enclose="div"> ββREM REM Printer-q-all.pc REM REM Query Printer table. REM: #include <stdio.h> #include <sqlca.h> #define UN...")
1/*
2REM
3REM Printer-q-all.pc
4REM
5REM Query Printer table.
6REM
7*/
8
9#include <stdio.h>
10#include <sqlca.h>
11
12#define UNAME_LEN 32
13#define PWD_LEN 16
14
15VARCHAR username[UNAME_LEN]; /* VARCHAR is an Oracle-supplied struct */
16VARCHAR password[PWD_LEN]; /* varchar can be in lower case also. */
17
18char u_name[UNAME_LEN];
19char pwd[PWD_LEN];
20
21struct {
22 char model[6];
23 char color[6];
24 char type[8];
25 int price;
26} printer;
27
28void connect_to_oracle();
29void sql_error();
30
31void main(int argc, char* argv[]) {
32 connect_to_oracle();
33
34 EXEC SQL DECLARE c CURSOR FOR
35 SELECT *
36 FROM Printer;
37
38 EXEC SQL OPEN c;
39
40 EXEC SQL WHENEVER NOT FOUND DO BREAK;
41
42 printf("\nmodel\tcolor\ttype\tprice\n");
43 for(;;) {
44 EXEC SQL FETCH c INTO :pc;
45 printf("%s\t%s\t%s\t%d\n", pc.model,
46 pc.color,
47 pc.type,
48 pc.price);
49 }
50
51 EXEC SQL CLOSE c;
52
53 EXEC SQL COMMIT WORK RELEASE;
54
55 exit(0);
56}
57
58
59void sql_error(char* msg) {
60 char err_msg[128];
61 int buflen, msglen;
62
63 EXEC SQL WHENEVER SQLERROR CONTINUE;
64
65 printf("%s \n", msg);
66 buflen = sizeof(err_msg);
67 sqlglm(err_msg, &buflen, &msglen);
68 printf("%.*s \n", msglen, err_msg);
69 exit(1);
70}
71
72
73void connect_to_oracle() {
74 /* get your username/passwd from "user_pwd.txt" file */
75
76 FILE *in_file;
77 in_file = fopen("user_pwd.txt", "r");
78 fscanf(in_file, "%s", u_name);
79 fscanf(in_file, "%s", pwd);
80
81 strncpy((char *) username.arr, u_name, UNAME_LEN);
82 username.len = strlen((char *) username.arr);
83
84 strncpy((char *) password.arr, pwd, PWD_LEN);
85 password.len = strlen((char *) password.arr);
86
87 EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
88 EXEC SQL CONNECT :username IDENTIFIED BY :password;
89
90 printf("connected to oracle - \n");
91}