j9678's Feed - Programmer's Heaven

Re: VBScript for Windows cluster

Tue, 01 Sep 2009 00:22:47 -0700

Posted a 'reply on the Visual Basic forum.

The problem solved. There was an invalid command inside the batch file cause the error. Thanks to those who had read my thead.

VBScript for Windows cluster

Mon, 31 Aug 2009 07:21:06 -0700

Posted a 'new message on the Visual Basic forum.

I need the Windows cluster member to auto run a batch job when the cluster resources are fail over to it from another member.
I use the vbscript below:

Dim WshShell
Set WshShell = CreateObject("WScript.Shell")
Function Online()
  RunCommand "c:\start.bat", True
  Online = 0
End Function
Function Open()
  Open = 0
End Function
Function Close()
  Close = 0
End Function
Function LooksAlive()
  LooksAlive = 0
End Function
Function IsAlive()
  IsAlive = 0
End Function
Function RunCommand(command, wait)
  RunCommand = WshShell.Run(command, 1, wait)
End Function

The problem is I can't bring it online in cluster administrator, and can't trigger the batch job. It show an error code and I think i miss something in the code.
Please, Is there anyone can help me !!!

Re: Borland Builder 6 multiple source files problem

Mon, 12 May 2008 07:46:21 -0700

Posted the message 'Re: Borland Builder 6 multiple source files problem' on the C++ Builder forum.

: I don't know how to compile and link programs consisting of multiple
: source files in Borland Builder 6.
: The compiler show the class members have the problem of unresolve
: link if I place all 3 files (header, source-code, main program) in
: the same directory.
:
Just found the answer in the previous post. Thanks for reading this.

Borland Builder 6 multiple source files problem

Mon, 12 May 2008 06:44:34 -0700

Posted the message 'Borland Builder 6 multiple source files problem' on the C++ Builder forum.

I don't know how to compile and link programs consisting of multiple source files in Borland Builder 6.
The compiler show the class members have the problem of unresolve link if I place all 3 files (header, source-code, main program) in the same directory.

Re: How to solve this bug ?

Fri, 09 May 2008 01:04:48 -0700

Posted the message 'Re: How to solve this bug ?' on the Beginner C/C++ forum.

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
struct inputNode{
        char Id[8];
        char Name[31];
        char Class[4];
        char Position[51];
        struct inputNode *nextPtr;
};
typedef struct inputNode InputNode;
typedef InputNode *InputNodePtr;
void inputScreen1(void);
void inputScreen11(InputNodePtr *, FILE *);
int print(FILE *);
void main(){
        InputNodePtr inputPtr = NULL;
        int choice;
        FILE *sfPtr;
        printf("XXX Secondary School Student's Union\n");
        printf("1.\tAdd new member information\n");
        printf("2.\tPrint member list\n");
        printf("3.\tExit\n");
        printf("Please enter your choice:");
        scanf("%d", &choice);
        while (choice != 3){
                switch (choice){
                        case 1:
                                if ((sfPtr = fopen("students.txt", "a")) == NULL)
                                        printf("File could not be open.\n");
                                else
                                        inputScreen11(&inputPtr, sfPtr);
                                fclose(sfPtr);
                                break;
                        case 2:
                                if ((sfPtr = fopen("students.txt", "r")) == NULL)
                                        printf("File could not be open.\n");
                                else
                                        choice = print(sfPtr);
                                fclose(sfPtr);
                                break;
                        default:
                                printf("Invalid choice.\n");
                                break;
                }
                if (choice != 3){
                        inputScreen1();
                        scanf("%d", &choice);
                        getchar();
                }
        }
        system("pause");
}
void inputScreen1(void){
        printf("1. Add new member information\n");
        printf("2. Print member list\n");
        printf("3. Exit\n");
        printf("Please enter your choice:");
}
void inputScreen11(InputNodePtr *topPtr, FILE *fPtr){
        void createFile(FILE *, InputNodePtr);
        char id[8], na[31], cl[4], po[51], add;
        InputNodePtr newPtr;
        printf("Please enter the followings:\n");
        do{
                printf("Student Id: ");
                scanf("%s", id);
                getchar();
                if (strlen(id) != 7)
                        printf("7 characters only\n");
        }while (strlen(id) != 7);
        do{
                printf("Student Name: ");
                gets(na);
                if (strlen(na) > 30)
                        printf("Max. 30 characters\n");
        }while (strlen(na) > 30);
        do{
                printf("Class: ");
                scanf("%s", cl);
                getchar();
                if (strlen(cl) != 3)
                        printf("3 characters only\n");
        }while (strlen(cl) != 3);
        do{
                printf("Position: ");
                gets(po);
                if (strlen(po) > 50)
                        printf("Max. 50 characters\n");
        }while (strlen(po) > 50);
        do{
                printf("Are you sure to add new member information(Y/N)?");
                scanf("%c", &add);
                getchar();
                if (islower(add))
                        add = toupper(add);
                switch (add){
                        case 'Y':
                                newPtr = malloc(sizeof(InputNode));
                                if (newPtr != NULL){
                                        strcpy(newPtr->Id, id);
                                        strcpy(newPtr->Name, na);
                                        strcpy(newPtr->Class, cl);
                                        strcpy(newPtr->Position, po);
                                        newPtr->nextPtr = *topPtr;
                                        *topPtr = newPtr;
                                }
                                createFile(fPtr, newPtr);
                                free(newPtr);
                                break;
                        case 'N':
                                break;
                        default:
                                printf("Invalid choice.\n");
                                break;
                }
        }while ((add != 'Y') && (add != 'N'));
}
void createFile(FILE *fPtr, InputNodePtr writePtr){
        fprintf(fPtr, "%s %s %s %s\n", writePtr->Id, writePtr->Name, writePtr->Class, writePtr->Position);
}
int print(FILE *fPtr){
        struct inputNode input = {"", "", "", ""};
        char re;
        printf("Student id\tStudent Name\t\tClass\t\tPosition\n");
        fscanf(fPtr, "%s%s%s%s", input.Id, input.Name, input.Class, input.Position);
        while (!feof(fPtr)){
                printf("%-16s%-24s%s%21s\n", input.Id, input.Name, input.Class, input.Position);
                fscanf(fPtr, "%s%s%s%s", input.Id, input.Name, input.Class, input.Position);
        }
        do{
                printf("Return to Main Menu / Exit the program (R/E):");
                scanf("%c", &re);
                if (islower(re))
                        re = toupper(re);
                if (re == 'R')
                        return 0;
                else if (re == 'E')
                        return 3;
                else
                        printf("Invalid choice.\n");
        }while ((re != 'R') && (re != 'E'));
        return 0;
}

How to solve this bug ?

Tue, 06 May 2008 11:36:07 -0700

Posted the message 'How to solve this bug ?' on the Beginner C/C++ forum.

This program has a bug. If you choose option 2 (ofcoz you need to have file students.txt first, which can create by option 1). It will print the statement "Return to Main ..." twice. I expect it should print once only.

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
struct inputNode{
char Id[8];
char Name[31];
char Class[4];
char Position[51];
struct inputNode *nextPtr;
};
typedef struct inputNode InputNode;
typedef InputNode *InputNodePtr;
void inputScreen1(void);
void inputScreen11(InputNodePtr *, FILE *);
int print(FILE *);
void main(){
InputNodePtr inputPtr = NULL;
int choice;
FILE *sfPtr;
printf("XXX Secondary School Student's Union\n");
printf("1.\tAdd new member information\n");
printf("2.\tPrint member list\n");
printf("3.\tExit\n");
printf("Please enter your choice:");
scanf("%d", &choice);
while (choice != 3){
switch (choice){
case 1:
if ((sfPtr = fopen("students.txt", "a")) == NULL)
printf("File could not be open.\n");
else
inputScreen11(&inputPtr, sfPtr);
fclose(sfPtr);
break;
case 2:
if ((sfPtr = fopen("students.txt", "r")) == NULL)
printf("File could not be open.\n");
else
choice = print(sfPtr);
fclose(sfPtr);
break;
default:
printf("Invalid choice.\n");
break;
}
if (choice != 3){
inputScreen1();
scanf("%d", &choice);
getchar();
}
}
system("pause");
}
void inputScreen1(void){
printf("1. Add new member information\n");
printf("2. Print member list\n");
printf("3. Exit\n");
printf("Please enter your choice:");
}
void inputScreen11(InputNodePtr *topPtr, FILE *fPtr){
void createFile(FILE *, InputNodePtr);
char id[8], na[31], cl[4], po[51], add;
InputNodePtr newPtr;
printf("Please enter the followings:\n");
do{
printf("Student Id: ");
scanf("%s", id);
getchar();
if (strlen(id) != 7)
printf("7 characters only\n");
}while (strlen(id) != 7);
do{
printf("Student Name: ");
gets(na);
if (strlen(na) > 30)
printf("Max. 30 characters\n");
}while (strlen(na) > 30);
do{
printf("Class: ");
scanf("%s", cl);
getchar();
if (strlen(cl) != 3)
printf("3 characters only\n");
}while (strlen(cl) != 3);
do{
printf("Position: ");
gets(po);
if (strlen(po) > 50)
printf("Max. 50 characters\n");
}while (strlen(po) > 50);
do{
printf("Are you sure to add new member information(Y/N)?");
scanf("%c", &add);
getchar();
if (islower(add))
add = toupper(add);
switch (add){
case 'Y':
newPtr = malloc(sizeof(InputNode));
if (newPtr != NULL){
strcpy(newPtr->Id, id);
strcpy(newPtr->Name, na);
strcpy(newPtr->Class, cl);
strcpy(newPtr->Position, po);
newPtr->nextPtr = *topPtr;
*topPtr = newPtr;
}
createFile(fPtr, newPtr);
free(newPtr);
break;
case 'N':
break;
default:
printf("Invalid choice.\n");
break;
}
}while ((add != 'Y') && (add != 'N'));
}
void createFile(FILE *fPtr, InputNodePtr writePtr){
fprintf(fPtr, "%s %s %s %s\n", writePtr->Id, writePtr->Name, writePtr->Class, writePtr->Position);
}
int print(FILE *fPtr){
struct inputNode input = {"", "", "", ""};
char re;
printf("Student id\tStudent Name\t\tClass\t\tPosition\n");
fscanf(fPtr, "%s%s%s%s", input.Id, input.Name, input.Class, input.Position);
while (!feof(fPtr)){
printf("%-16s%-24s%s%21s\n", input.Id, input.Name, input.Class, input.Position);
fscanf(fPtr, "%s%s%s%s", input.Id, input.Name, input.Class, input.Position);
}
printf("Return to Main Menu / Exit the program (R/E):");
getchar();
re = toupper(re);
if ((re != 'R') && (re != 'E')){
printf("Return to Main Menu / Exit the program (R/E):");
scanf("%c", &re);
re = toupper(re);
}
if (re == 'R')
return 0;
else if (re == 'E')
return 3;
}

Strange behavior of while and for loop

Thu, 24 Apr 2008 22:00:30 -0700

Posted the message 'Strange behavior of while and for loop' on the Beginner C/C++ forum.

Below is a example programm. The strange is when I add the while or for loop to the main function, The "scanf" statement inside sub-function
test() never execute but always return a 1.

#include <stdio.h>
int test(void);
void main(){
int number, now;
do{
printf("test now\n");
scanf("%d", &now);
number = test();
printf("%d\n", number);
}while (now != 0);
system("pause");
}
int test(){
char abc;
printf("Enter: ");
scanf("%c", &abc);
if (abc == 'h')
return 11;
}