Yurttas/PL/DBL/oracle/F/03/Company-A/Project-def.pc

 1/*
 2REM
 3REM
 4REM Project-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: Project");
29
30  EXEC SQL
31    CREATE TABLE Project(pname VARCHAR2(24) NOT NULL,
32                         pnumber INTEGER NOT NULL,
33                         plocation VARCHAR2(24),
34                         dnum INTEGER NOT NULL,
35             PRIMARY KEY(pnumber),
36             FOREIGN KEY(dnum) REFERENCES Department(dnumber));
37
38  EXEC SQL COMMIT WORK RELEASE;
39
40  exit(0);
41}
42
43
44void sql_error(char* msg) {
45  char err_msg[128];
46  int buflen, msglen;
47
48  EXEC SQL WHENEVER SQLERROR CONTINUE;
49
50  printf("%s \n", msg);
51  buflen = sizeof(err_msg);
52  sqlglm(err_msg, &buflen, &msglen);
53  printf("%.*s \n", msglen, err_msg);
54  exit(1);
55}
56
57
58void connect_to_oracle() {
59  /* get your username/passwd from "user_pwd.txt" file */
60
61  FILE *in_file;
62  in_file = fopen("user_pwd.txt", "r");
63  fscanf(in_file, "%s", u_name);
64  fscanf(in_file, "%s", pwd);
65
66  strncpy((char *) username.arr, u_name, UNAME_LEN);
67  username.len = strlen((char *) username.arr);
68
69  strncpy((char *) password.arr, pwd, PWD_LEN);
70  password.len = strlen((char *) password.arr);
71
72  EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
73  EXEC SQL CONNECT :username IDENTIFIED BY :password;
74
75  printf("connected to oracle - \n");
76}