User Replies: will – MYCPLUS – C and C++ Programming Resources

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Viewing 13 posts - 1 through 13 (of 13 total)

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July 10, 2011 at 8:04 pm in reply to: Global module in C# #3656

will

Participant

There is no such thing in C# instead you can create a public class in any namespace with Static Members functions like:

<br />
namespace GlobalFunctions //You can name it anything you want<br />
{<br />
public class ClassName //Name your class<br />
{<br />
ClassName bers() {}  // Constructor for class<br />
public static bool AnyFunction()<br />
{<br />
return true;<br />
}<br />
}<br />
}<br />
<br />
//Use it in Other classes<br />
using GlobalFunctions<br />
bool isTrue = ClassName.anyFunction();<br />

namespace GlobalFunctions //You can name it anything you want

{

public class ClassName //Name your class

{

ClassName bers() {} // Constructor for class

public static bool AnyFunction()

{

return true;

}

//Use it in Other classes

using GlobalFunctions

bool isTrue = ClassName.anyFunction();

December 8, 2007 at 5:45 am in reply to: Tree traversal #3288

will

Participant

Hello
You will need to use this function recursively and mantain the visiting of the nodes. you will need to keep track of all the nodes which have been traversed and on that criteria you will call this dunction. At the moment you are just calling this function from any location and it gets stuck in loop. So in order to break that loop you will need a criteria to break the loop. And that criteria can be fulfilled by using another linked list or a variable which will hold the number of nodes traversed and then compare that variable with the actual number of nodes of the tree.
Hopefully this answers your question.

July 28, 2007 at 2:50 am in reply to: creating strip chart in c #3244

will

Participant

Can you show us the code you have written to generate the scope chart.

June 12, 2007 at 5:35 pm in reply to: doubt on comparision operator #3231

will

Participant

@drop2kumar wrote:

Hi
the followiing code is giving 1 as answer but answer should be 0 …becoz 0.7 is not grater than 0.7
int main(){ float a=0.7; printf("%d",(0.7>a)); }
1
2
3
4
int main(){ 
float a=0.7; 
printf("%d",(0.7>a)); 
}

Actually you are comparing the float type variable with a value which can be any thing. It can be an integer, float or any thing else. So in that case compiler does not know about the type.
Now if you explicitly mention the type of both the variables and then compare them the result would be according to your expectations. Hopefully this would clear your doubt.

<br />
int main(){<br />
  float a=0.7;<br />
  float b=0.7;<br />
  printf("%d",(b>a));<br />
  printf("%d",(0.7>a));<br />
 <br />
}

int main(){

float a=0.7;

float b=0.7;

printf("%d",(b>a));

printf("%d",(0.7>a));

}

May 23, 2007 at 5:15 am in reply to: Graphics Animation #3199

will

Participant

Please refer to the post: https://www.mycplus.com/forum/forum_posts.asp?TID=225&PN=1

Which shows a small demo program of how to create a simple animation in C Language.

May 23, 2007 at 5:13 am in reply to: simple #3229

will

Participant

Hello
Refer to : https://www.mycplus.com/forum/forum_posts.asp?TID=225&PN=1
for graphics animation. Its a simple demo program which will give you an idea how to create the animation.

May 21, 2007 at 9:05 am in reply to: animation #3227

will

Participant

Hello
Here is a portion of a program for “Bank managgement system” which I worte while I was in my Bachelors of IT. To make an animation in C Language you will need to create the image at run time and move that image on the screen. What i have done is created a bitmap using circles, arcs & different colors, and tried to make some sort of a logo, then put the whole graphics area in an image using getimage() function & used putimage() to show the image on the screen. To make an animation in C Language I have put this image in a loop which animates the image on the screen in scrolling mode.

 for(int count=1;count&lt;300;count+=2){<br />
    putimage(1+count,100,image,COPY_PUT);<br />
}

for(int count=1;count<300;count+=2){

putimage(1+count,100,image,COPY_PUT);

}

Also I have made another animation which makes a complete line from a single point.

for(int down=0;down&lt;640;++down)<br />
 {<br />
    delay(5);<br />
    line(1,220,1+down,220);<br />
 }

for(int down=0;down<640;++down)

{

delay(5);

line(1,220,1+down,220);

}

And at the end I have made another animation effect using the line() function again.

for(int bottom=0;bottom&lt;300;bottom+=4)<br />
  line(1,220+bottom,640,220+bottom);<br />

for(int bottom=0;bottom<300;bottom+=4)

line(1,220+bottom,640,220+bottom);

Below is the main source code of the complete animation. You can modify it according to your needs.

#include<iostream.h><br />
#include<conio.h><br />
#include<graphics.h><br />
#include<alloc.h><br />
#include<dos.h><br />
#include<fstream.h><br />
#include<stdlib.h><br />
#include<string.h><br />
void main(void){<br />
 void *image;<br />
 int size;<br />
 int dr=9,mode=2;<br />
 initgraph(&#038;dr,&#038;mode,"..\bgi");<br />
 size=imagesize(140,140,500,250);<br />
 image=malloc(size);<br />
 setfillstyle(SOLID_FILL,GREEN);<br />
 circle(200,200,50);<br />
 floodfill(200,200,WHITE);<br />
 setcolor(LIGHTGRAY);<br />
 circle(200,200,19);<br />
 setcolor(WHITE);<br />
 circle(200,200,18);<br />
 circle(200,200,49);<br />
 circle(200,200,53);<br />
 circle(200,200,20);<br />
 <br />
 arc(215,215,350,90,30);<br />
 arc(210,182,90,194,30);<br />
 arc(180,195,180,300,30);<br />
 settextstyle(1,HORIZ_DIR,1);<br />
 setcolor(LIGHTGRAY);<br />
 outtextxy(270,180,"National Bank");<br />
 <br />
 outtextxy(270,185,"___________________");<br />
 outtextxy(270,210,"Of Pakistan Pvt Ltd.");<br />
 settextstyle(0,HORIZ_DIR,0);<br />
 setcolor(DARKGRAY);<br />
 outtextxy(270,240,"COPYRIGHT 2002");<br />
 getimage(141,141,499,259,image);<br />
 cleardevice();<br />
 for(int count=1;count&lt;300;count+=2)<br />
  putimage(1+count,100,image,COPY_PUT);<br />
 for(int down=0;down&lt;640;++down)<br />
 {<br />
  delay(5);<br />
  line(1,220,1+down,220);<br />
 }<br />
 setcolor(BLUE);<br />
 for(int bottom=0;bottom&lt;300;bottom+=4)<br />
  line(1,220+bottom,640,220+bottom);<br />
 free(image);<br />
 getch();<br />
 closegraph();<br />
}<br />

#include<iostream.h>

#include<conio.h>

#include<graphics.h>

#include<alloc.h>

#include<dos.h>

#include<fstream.h>

#include<stdlib.h>

#include<string.h>

void main(void){

void *image;

int size;

int dr=9,mode=2;

initgraph(&dr,&mode,"..\bgi");

size=imagesize(140,140,500,250);

image=malloc(size);

setfillstyle(SOLID_FILL,GREEN);

circle(200,200,50);

floodfill(200,200,WHITE);

setcolor(LIGHTGRAY);

circle(200,200,19);

setcolor(WHITE);

circle(200,200,18);

circle(200,200,49);

circle(200,200,53);

circle(200,200,20);

arc(215,215,350,90,30);

arc(210,182,90,194,30);

arc(180,195,180,300,30);

settextstyle(1,HORIZ_DIR,1);

setcolor(LIGHTGRAY);

outtextxy(270,180,"National Bank");

outtextxy(270,185,"___________________");

outtextxy(270,210,"Of Pakistan Pvt Ltd.");

settextstyle(0,HORIZ_DIR,0);

setcolor(DARKGRAY);

getimage(141,141,499,259,image);

cleardevice();

for(int count=1;count<300;count+=2)

putimage(1+count,100,image,COPY_PUT);

for(int down=0;down<640;++down)

{

delay(5);

line(1,220,1+down,220);

}

setcolor(BLUE);

for(int bottom=0;bottom<300;bottom+=4)

line(1,220+bottom,640,220+bottom);

free(image);

getch();

closegraph();

}

February 10, 2006 at 12:50 pm in reply to: i got problem at system() function usage #3180

will

Participant

It’s because of the improved security in Windows XP or Windows 200. The functions like

inp() [/*:1cuthl9v]
utp()[/*:1cuthl9v]
system();[/*:1cuthl9v]

does not work on an NT platform.
There may be some other problems, but I think using win 98 would resolve the problem.

February 24, 2005 at 9:53 am in reply to: Calling function with main() #3136

will

Participant

Thanks spsinghs for explanations.

December 7, 2004 at 9:13 am in reply to: Windows, Mac or Linux? #3121

will

Participant

wel its an endless discussion that what is best?
Answer to this question would be
Both are best (for the one who is using it) :)
Any how different people may have different ideas?
Lets see how people think about it?

November 3, 2004 at 11:11 am in reply to: Pointers to Member Functions #3119

will

Participant

Ahsun that was a nice tutorial.
But it would be very best if you mention the website address from where you get that tuorial so that the users can have a look at it & may benifit from that site also.

Any how Good work. Whenever you find any good tutorial please do post them here.

Thanks
Saqib

October 22, 2004 at 10:25 am in reply to: Why people are not interested in Discussions #3110

will

Participant

wel I have made this website to help people like Zohaib who study C/C++ programming language. I am trying my best to provide quality material on this website.
like Tutorials, source code, free utilities and other contents.
Looking for any comments about the website from you people.
Thanks
Saqib

October 8, 2004 at 1:08 pm in reply to: Smart pointers… #3111

will

Participant

Smart pointers are C++ objects that simulate simple pointers by implementing operator-> and the unary operator*. In addition to sporting pointer syntax and semantics, smart pointers often perform useful tasks—such as memory management or locking—under the covers, thus freeing the application from carefully managing the lifetime of pointed-to objects.

The simplest example of a smart pointer is auto_ptr, which is included in the standard C++ library. You can find it in the header , or take a look at Scott Meyers’ auto_ptr implementation. Here is part of auto_ptr’s implementation, to illustrate what it does:

template <class T> class auto_ptr<br />
{<br />
    T* ptr;<br />
public:<br />
    explicit auto_ptr(T* p = 0) : ptr(p) {}<br />
    ~auto_ptr()    & nbsp;         & nbsp;  {delete ptr;}<br />
    T&#038;  operator*()        & nbsp;     {return  *ptr;}<br />
    T*  operator->()       &#038;nb sp;     {return  ptr;}<br />
    // ...<br />
};<br />
</class>

template <class T> class auto_ptr

{

T* ptr;

public:

explicit auto_ptr(T* p = 0) : ptr(p) {}

~auto_ptr() & nbsp; & nbsp; {delete ptr;}

T& operator*() & nbsp; {return *ptr;}

T* operator->() &nb sp; {return ptr;}

// ...

};

</class>

You can find many readings on smart pointers. I have found two very interesting readings on smart pointers.

http://ootips.org/yonat/4dev/smart-pointers.html
http://www.informit.com/articles/article.asp?p=31529

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