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January 1st, 2009, 12:30 AM
#1
no bugs but cannot compile linkedstack please help fixed Thanks
First of all, Happy New Year 2009!
I've write a simple linked stack program
#include<iostream.h>
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
struct node
{
int data;
struct node *link;
};
struct node *top=NULL,*temp;
void main()
{ int choice,data;
while(1)//infinite loop is used to insert/delete infinite number of nodes
{ printf("\n1.Push\n2.Pop\n3.Display\n4.Exit\n");
cout << "\nEnter ur choice:";
cin >> "%d",&choice;
switch(choice)
{ case 1:
temp=(struct node *)malloc(sizeof(struct node));
cout << "Enter a node data :";
cin >> "%d",&data;
temp->data=data;
temp->link=top;
top=temp;
break;
case 2:
if(top!=NULL)
{
cout << "The poped element is %d",top->data;
top=top->link;
}
else
{ cout << "\nStack Underflow"; }
break;
case 3:
temp=top;
if(temp==NULL)
{ cout << "\nStack is empty\n" ; }
while(temp!=NULL)
{
cout << "->%d->",temp->data ;
temp=temp->link; }
break;
case 4:
exit(0); }
}
}
compile :
--------------------Configuration: HW3_49521038LinkedStack2 - Win32 Debug--------------------
HW3_49521038LinkedStack2.exe - 0 error(s), 0 warning(s)
But it appeared to be compile error... The compile windows shows ERROR when input it.
Thanks alot.
Xenoglaux
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January 1st, 2009, 06:02 AM
#2
Re: no bugs but cannot compile linkedstack please help fixed Thanks
Im surprised the compiler didnt issue at least warnings. iostream.h is deprecated and replaced by iostream, conio.h is nonstandard, the other 2 headers are C headers. You program in c++ but use c constructs like struct node* ptr, in c++ its just node* ptr. You malloc memory that never gets freed.And main always returns int to the OS never void. any reason to mix printf and cout?
What book are you learning from. Consider taking it into the garden and burning it, then orderring a good book such as accelerated c++.
Get Microsoft Visual C++ Express here or CodeBlocks here.
Get STLFilt here to radically improve error messages when using the STL.
Get these two can't live without C++ libraries, BOOST here and Loki here.
Check your code with the Comeau Compiler and FlexeLint for standards compliance and some subtle errors.
Always use [code] code tags [/code] to make code legible and preserve indentation.
Do not ask for help writing destructive software such as viruses, gamehacks, keyloggers and the suchlike.
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January 2nd, 2009, 04:08 PM
#3
Re: no bugs but cannot compile linkedstack please help fixed Thanks
in addition to what everyone else says,
make sure you program isnt already running.
would also cause errors when compiling.
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January 5th, 2009, 05:16 PM
#4
Re: no bugs but cannot compile linkedstack please help fixed Thanks
Giving us the specific output you're seeing would help. I'm guessing you have a linker error.
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January 5th, 2009, 05:37 PM
#5
Re: no bugs but cannot compile linkedstack please help fixed Thanks
no bugs but cannot compile linkedstack please help fixed Thanks
This is an inherently false statement. Any program which will not complie, has at least one bug [A compile time error].
A program may compile, but not link. Still a bug, just a linker error instead of a compiler error.
A program may link, but not run. Still a bug. This is typically a design error, where some undefined behaviour is involved, or requirements of the language specification violated
A program may run, but not produce the desired results. Still a bug, most likely valid programming constructs, but an error in logic.
A program may run, produce the correct output, and still have a bug. Just because you get the deisred results, does NOT mean that your program is correct, or that it is bug-free. The only way to do this is my careful examination of the design and implementation to make sure that all conditions (anticipated or not) are handled in a reliable manner.
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