Yurttas/PL/DBL/oracle/F/03/Bank/u07.pc
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1/*
2REM
3REM u07.pc
4REM
5REM Insert that `Smith' has $1200 in account 9732 at the `Perryridge'
6REM branch.
7REM
8
9REM or
10REM INSERT INTO Depositor
11REM (branchname, accountnumber, customername, balance)
12REM VALUES ('Perryridge', 9989, 'Smith', 1200);
13
14REM or
15REM INSERT INTO Depositor
16REM (accountnumber, customername, branchname, balance)
17REM VALUES (9990, 'Smith', 'Perryridge', 1200);
18*/
19
20#include <stdio.h>
21#include <sqlca.h>
22
23#define UNAME_LEN 32
24#define PWD_LEN 16
25
26VARCHAR username[UNAME_LEN]; /* VARCHAR is an Oracle-supplied struct */
27VARCHAR password[PWD_LEN]; /* varchar can be in lower case also. */
28
29char u_name[UNAME_LEN];
30char pwd[PWD_LEN];
31
32struct {
33 char branchname[16];
34 int accountnumber;
35 char customername[16];
36 int balance;
37} depositor;
38
39void connect_to_oracle();
40void sql_error();
41
42void main(int argc, char* argv[]) {
43 connect_to_oracle();
44
45 EXEC SQL
46 INSERT INTO Depositor
47 VALUES ('Perryridge', 9732, 'Smith', 1200);
48
49 EXEC SQL DECLARE c CURSOR FOR
50 SELECT *
51 FROM Depositor;
52
53 EXEC SQL OPEN c;
54
55 EXEC SQL WHENEVER NOT FOUND DO BREAK;
56
57 printf("\nbranchname\taccountnumber\tcustomername\tbalance\n");
58 for(;;) {
59 EXEC SQL FETCH c INTO :depositor;
60 printf("%s\t%d\t\t%s\t%d\n", depositor.branchname,
61 depositor.accountnumber,
62 depositor.customername,
63 depositor.balance);
64 }
65
66 EXEC SQL CLOSE c;
67
68 EXEC SQL COMMIT WORK RELEASE;
69
70 exit(0);
71}
72
73
74void sql_error(char* msg) {
75 char err_msg[128];
76 int buflen, msglen;
77
78 EXEC SQL WHENEVER SQLERROR CONTINUE;
79
80 printf("%s \n", msg);
81 buflen = sizeof(err_msg);
82 sqlglm(err_msg, &buflen, &msglen);
83 printf("%.*s \n", msglen, err_msg);
84 exit(1);
85}
86
87
88void connect_to_oracle() {
89 /* get your username/passwd from "user_pwd.txt" file */
90
91 FILE *in_file;
92 in_file = fopen("user_pwd.txt", "r");
93 fscanf(in_file, "%s", u_name);
94 fscanf(in_file, "%s", pwd);
95
96 strncpy((char *) username.arr, u_name, UNAME_LEN);
97 username.len = strlen((char *) username.arr);
98
99 strncpy((char *) password.arr, pwd, PWD_LEN);
100 password.len = strlen((char *) password.arr);
101
102 EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
103 EXEC SQL CONNECT :username IDENTIFIED BY :password;
104
105 printf("connected to oracle - \n");
106}