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No, it is not circular. It is just a FIFO queue.
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For loops be for(i=0 ; i<MAX ; ++i)
front++; should be outside the for loop.
-Saurabh
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Output is wrong if I take it out of the for loop 
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Sry im not good at algorithms, when i ran your code in vs there was an error in
the 3rd line of the code below
root=queue[front];
for(i=1;i<=MAX;i++)
{
if (adj[root][i] && !visited[i])
ie : adj[root][i] , the root value was garbage,
and root=queue[front]; here front was 6 and queue[6] was uninitialized
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thanks for the reply. I am using the turbo c 3.0 IDE, I never knew it could run in visual studio. 
I had a hard time debugging this inside the turbo c ide so I posted it here.
Mike.
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Cant get it to work. The output is a blank screen 
#include <stdio.h>
#include <conio.h>
#define MAX 6 // Node/Vertex count
int adj[MAX][MAX]={
{0,1,1,1,0,0},
{1,0,0,0,1,1},
{1,0,0,0,0,0},
{1,0,0,0,0,0},
{0,1,0,0,0,0},
{0,1,1,0,0,0}
};
int visited[MAX];
void bfs(int goal);
int main ()
{
int s=3;
clrscr();
printf("The nodes order is ");
bfs(s);
return 0;
}
void bfs(int source)
{
int queue[MAX];
int i,front,rear,root;
front=rear=0;
for (i=1;i<MAX;i++)
{
visited[i]=0;
}
queue[++rear]=source;
visited[source]=1;
printf("%d :",source);
while(rear!=front)
{
root=queue[++front];
for(i=0;i<MAX;i++)
if (adj[root][i] && !visited[i])
{
queue[rear++]=i;
visited[i]=1;
printf("%d",i);
}
front++;
}
}
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What is your required output.
Please specify the output needed for the above program inputs.
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Hello mate, thanks for the reply. I need breadth first traversal on a graph, but its not working properly.
The program hangs inside my turbo c ide and I have to use 'break' to get out of the infinite loop. Also I dont know how to debug inside turbo c 3 IDE so having a hard time debugging the problem in my code.Please help me.
Thanks and best regards, Mike.
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Changes made :
for (i=0;i<MAX;i++)
{
visited[i]=0;
}
queue[rear++]=source; // its not ++rear as it becomes queue[1] instead of queue[0]
.....
.....
while(rear!=front)
{
root=queue[front]; //no need to increment front here
This is the output i got
The nodes order is 3 :01245
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The program is for breadth first traversal of a graph. The output is there but program is crashing. I have to use break to stop from infinite looping.
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rear=0;
1) queue[rear++]=source; // is same as queue[0]=source; and rear increments after assignment;
2) queue[++rear]=source; // is same as queue[1]=source; here rear increments before assignment;
Its from the precedence of operators in c, check operator precedence table[^]
The below program with minor changes as specified above runs fine in my turbo c , just add a getch() in main
#include <stdio.h>
#include <conio.h>
#define MAX 6 // Node/Vertex count
int adj[MAX][MAX]={
{0,1,1,1,0,0},
{1,0,0,0,1,1},
{1,0,0,0,0,0},
{1,0,0,0,0,0},
{0,1,0,0,0,0},
{0,1,1,0,0,0}
};
int visited[MAX];
void bfs(int goal);
int main ()
{
int s=3;
clrscr();
printf("The nodes order is ");
bfs(s);
getch();
return 0;
}
void bfs(int source)
{
int queue[MAX];
int i,front,rear,root;
front=rear=0;
for (i=0;i<MAX;i++)
{
visited[i]=0;
}
queue[rear++]=source;
visited[source]=1;
printf("%d :",source);
while(rear!=front)
{
root=queue[front];
for(i=0;i<MAX;i++)
if (adj[root][i] && !visited[i])
{
queue[rear++]=i;
visited[i]=1;
printf("%d",i);
}
front++;
}
}
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Thanks so much for the reply and the link, the program is working fine now. 
Best Regards, Mike.
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Thanks for the reply mate. Isn't ++rear=rear+1 ?
What is the difference between the two ?
Also queue[rear++]=source means queue[0]=source ?
Best regards, Mike.
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Hi
how can i chane VARIANT to CString?
VARIANT var=pRange->GetValue();
CString strp;
str=CString(var.bstrVal);
some time i got exception
Unhandled exception at 0x7c80a30a in test.exe: 0xC0000005: Access violation reading location 0x001e2000.
Call stack show
test.exe!ATL::ChTraitsCRT<char>::GetBaseTypeLength(const wchar_t * pszSource=0x001e1f98) Line 284 + 0x1e bytes C++
in cstring.h class pointing
static int __cdecl GetBaseTypeLength( _In_z_ LPCWSTR pszSource ) throw()
{
return ::WideCharToMultiByte( _AtlGetConversionACP(), 0, pszSource, -1, NULL, 0, NULL, NULL )-1;
}
Can any one tell me region behind of exception.
Plz help me
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Maybe your VARIANT doesn't contain a string but something else?
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <
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Thanks for reply.
Can you give me idea to solve that problem?
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Well, as i said, it could be that your VARIANT contains something else than a string, like an integer for example, check this[^] out and you will see there can be a lot of datatypes a VARIANT can hold. So -based on what you see there- you should either skip non-string values or maybe convert what you can to a string if you really need to work with a string.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <
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Use VariantChangeType[^] to convert the VARIANT to one holding a BSTR representation of the data before trying to use the BSTR.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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Hi,
i write this simple program and execcte it. i thought that it will give all the name of directories where it was placed , but it is not working as i was thinking.i don't want to use system() function in place of crateprocess().my code is following-
#include<windows.h>
#include<stdio.h>
int main()
{
char *command="dir";
STARTUPINFO si = {sizeof(STARTUPINFO)};
PROCESS_INFORMATION pi;
CreateProcess("C:\\Windows\\System32\\cmd.exe", command, NULL, NULL, 0, 0, NULL, NULL, &si, &pi);
return 0;
}
please help me.i want to give command to createprocess() only when program is written not after execution of program.
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ravi 12 wrote: char *command="dir";
change to
char *command="/C dir";
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thanks Madhu Nair, it works fine but i didn't understant why you put /C dir .can you please explain it?
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I don't really understand what you're trying to do, especially this is confusing:
ravi 12 wrote: i want to give command to createprocess() only when program is written not after execution of program.
Anyway, it seems that you want to start a new command shell and pass a parameter. In order to do that you would need this:
cmd /C dir
To do that with CreateProcess() I suggest the following code:
STARTUPINFO si;
PROCESS_INFORMATION pi;
::ZeroMemory(&si, sizeof(STARTUPINFO));
::ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
si.cb = sizeof(STARTUPINFO);
if (::CreateProcess(NULL, "cmd.exe /C dir", NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi) == 0)
return FALSE;
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thanks Michael Schubert, same thing i want to know with you.actually when i use
CreateProcess(NULL, "cmd.exe ", command, NULL, FALSE, 0, NULL, NULL, &si, &pi)
it will open a command prompt and then i have to write dir but i don't want that.
anyway it works fine but i didn't understant why you put /C dir .can you please explain it?
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ravi 12 wrote: i didn't understant why you put /C dir .can you please explain it?
See the Windows Help for cmd. A statement such as cmd /C dir tells cmd to run the command 'dir' and then terminate. Without the /C option it will start a new cmd shell.
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ravi 12 wrote: i thought that it will give all the name of directories where it was placed , but it is not working as i was thinking.
Did you try typing cmd dir in the Run dialog box and see what that did?
That aside, why are you not using the FindFirstFile() and FindNextFile() pair like was suggested here?
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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