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

 1/*
 2REM
 3REM
 4REM Suppliers-def.pc
 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: Suppliers");
29
30  EXEC SQL
31    CREATE TABLE Suppliers(sn VARCHAR2(4) NOT NULL,
32                           sname VARCHAR2(16),
33                           status NUMBER(4),
34                           city VARCHAR2(16),
35               PRIMARY KEY(sn));
36
37  EXEC SQL COMMIT WORK RELEASE;
38
39  exit(0);
40}
41
42
43void sql_error(char* msg) {
44  char err_msg[128];
45  int buflen, msglen;
46
47  EXEC SQL WHENEVER SQLERROR CONTINUE;
48
49  printf("%s \n", msg);
50  buflen = sizeof(err_msg);
51  sqlglm(err_msg, &buflen, &msglen);
52  printf("%.*s \n", msglen, err_msg);
53  exit(1);
54}
55
56
57void connect_to_oracle() {
58  /* get your username/passwd from "user_pwd.txt" file */
59
60  FILE *in_file;
61  in_file = fopen("user_pwd.txt", "r");
62  fscanf(in_file, "%s", u_name);
63  fscanf(in_file, "%s", pwd);
64
65  strncpy((char *) username.arr, u_name, UNAME_LEN);
66  username.len = strlen((char *) username.arr);
67
68  strncpy((char *) password.arr, pwd, PWD_LEN);
69  password.len = strlen((char *) password.arr);
70
71  EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
72  EXEC SQL CONNECT :username IDENTIFIED BY :password;
73
74  printf("connected to oracle - \n");
75}