史上最简单的pro*c程序

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
EXEC SQL include sqlca;
EXEC ORACLE OPTION (RELEASE_CURSOR = YES);
EXEC SQL BEGIN DECLARE SECTION;
                VARCHAR username[20];
                VARCHAR password[20];
EXEC SQL END DECLARE SECTION;

void sql_error()
{
                EXEC SQL WHENEVER SQLERROR CONTINUE;
                printf("/n Oracle error detected:/n");
                printf("/n%.70s/n",sqlca.sqlerrm.sqlerrmc);
                EXEC SQL ROLLBACK RELEASE;
exit(1);
}

main()
{
                strcpy(username.arr,"gdnum_true");
                strcpy(password.arr,"gdnumtrue_10");
                username.len=strlen(username.arr);
                password.len=strlen(password.arr);


                EXEC SQL CONNECT :username IDENTIFIED BY :password;
                printf("sqlca.sqlcode=%d;/n",sqlca.sqlcode);
                printf("login user=%s",username.arr);
                exit(0);
}

proc pro1.pc
cc -o pro1 pro1.c -L $ORACLE_HOME/lib32 -lclntsh
不作文字说明，只作例程记载