Yurttas/PL/DBL/oracle/F/03/SPJ/Suppliers-ins.pc
Revision as of 00:07, 5 November 2013 by MassBot1 (talk | contribs) (Created page with "<syntaxhighlight lang="text" line start="1" enclose="div"> →REM REM REM Suppliers-ins.pc REM REM: #include <stdio.h> #include <sqlca.h> #define UNAME_LEN 32 #define PWD_...")
1/*
2REM
3REM
4REM Suppliers-ins.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
21struct {
22 char sn[4];
23 char sname[16];
24 int status;
25 char city[16];
26} suppliers;
27
28void connect_to_oracle();
29void sql_error();
30
31
32void main(int argc, char* argv[]) {
33 FILE *in_file;
34
35 char in_filename[32];
36
37 if(argc<2) {
38 printf("Enter the input filename : ");
39 scanf("%s", in_filename);
40 }
41 else strcpy(in_filename, argv[1]);
42
43 in_file = fopen(in_filename, "r");
44
45 if(in_file==NULL)
46 printf("File named as %s is not opened for input.\n", in_filename);
47 else {
48 connect_to_oracle();
49
50 EXEC SQL
51 WHENEVER SQLERROR DO sql_error("Error in INSERT_table: Suppliers");
52
53 while(fscanf(in_file,"%3c %7c %2d %7c\n",suppliers.sn,
54 suppliers.sname,
55 &suppliers.status,
56 suppliers.city)!=EOF){
57 EXEC SQL
58 INSERT INTO Suppliers
59 VALUES(:suppliers.sn,
60 :suppliers.sname,
61 :suppliers.status,
62 :suppliers.city);
63 }
64 }
65
66 EXEC SQL COMMIT WORK RELEASE;
67
68 exit(0);
69}
70
71
72void sql_error(char* msg) {
73 char err_msg[128];
74 int buflen, msglen;
75
76 EXEC SQL WHENEVER SQLERROR CONTINUE;
77
78 printf("%s \n", msg);
79 buflen = sizeof(err_msg);
80 sqlglm(err_msg, &buflen, &msglen);
81 printf("%.*s \n", msglen, err_msg);
82 exit(1);
83}
84
85
86void connect_to_oracle() {
87 /* get your username/passwd from "user_pwd.txt" file */
88
89 FILE *in_file;
90 in_file = fopen("user_pwd.txt", "r");
91 fscanf(in_file, "%s", u_name);
92 fscanf(in_file, "%s", pwd);
93
94 strncpy((char *) username.arr, u_name, UNAME_LEN);
95 username.len = strlen((char *) username.arr);
96
97 strncpy((char *) password.arr, pwd, PWD_LEN);
98 password.len = strlen((char *) password.arr);
99
100 EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
101 EXEC SQL CONNECT :username IDENTIFIED BY :password;
102
103 printf("connected to oracle - \n");
104}