Yurttas/PL/DBL/oracle/F/03/SPJ/Projects-def.pc

 1/*
 2REM
 3REM
 4REM Projects-def.sql
 5REM
 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
21void connect_to_oracle();
22void sql_error();
23
24void main(int argc, char* argv[]) {
25  connect_to_oracle();
26
27  EXEC SQL
28    WHENEVER SQLERROR DO sql_error("Error in CREATE_table: Projects");
29
30  EXEC SQL
31    CREATE TABLE Projects(jn VARCHAR2(4) NOT NULL,
32                          jname VARCHAR2(16),
33                          city VARCHAR2(16),
34              PRIMARY KEY(jn));
35
36  EXEC SQL COMMIT WORK RELEASE;
37
38  exit(0);
39}
40
41
42void sql_error(char* msg) {
43  char err_msg[128];
44  int buflen, msglen;
45
46  EXEC SQL WHENEVER SQLERROR CONTINUE;
47
48  printf("%s \n", msg);
49  buflen = sizeof(err_msg);
50  sqlglm(err_msg, &buflen, &msglen);
51  printf("%.*s \n", msglen, err_msg);
52  exit(1);
53}
54
55
56void connect_to_oracle() {
57  /* get your username/passwd from "user_pwd.txt" file */
58
59  FILE *in_file;
60  in_file = fopen("user_pwd.txt", "r");
61  fscanf(in_file, "%s", u_name);
62  fscanf(in_file, "%s", pwd);
63
64  strncpy((char *) username.arr, u_name, UNAME_LEN);
65  username.len = strlen((char *) username.arr);
66
67  strncpy((char *) password.arr, pwd, PWD_LEN);
68  password.len = strlen((char *) password.arr);
69
70  EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
71  EXEC SQL CONNECT :username IDENTIFIED BY :password;
72
73  printf("connected to oracle - \n");
74}