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the code i am about to an exercise i am using in trying to be effective to debug a code. it has several errors and deliberately do but i am trying to learn the art of programming by looking at the types of error in the error and warning list. i will post the code , then the errors and you all guide me in debugging this program.

C++

#include <iostream.h>
#include <conio.h>

int min(int* &a, int b);

void main()

{
int* x;
int i=0;

 x = new float [0];

 cout<<"\n Enter whole numbers, enter any letter when finishd.";

 while


    cin>>x[i];

   {i++};

   cout<<"Enter smallest number is:<<min(x,i)";

   getch();

   return 0;:

   }

   int main (int*&a , int b);

   {int m = a[0];

   for (int i = 1; i<b; i++)
   {
      if (a[i]<m)
      {m=a(i);}
      }
      return m;}

line cpp 12,5 cannot convert 'float*' to  'int'
line cpp 18,1 while statement missing (
line cpp 20,9 statement missing;
line cpp 20,13 'main()'cannot return a value
line cpp 26,14 unreachable code -warning
line cpp 26,14 expression syntax
line cpp 28,5 statement missing
line cpp 32,15 undefined symbol 'a'
line cpp 34,24 undefined symbol 'b'
line cpp 39,16 'main()cannot return a value.
line cpp 39,1 compound statement missing }
line cpp 40,1compound statement missing
x is assigned a value that is never used

Now!!! how do i use these warnings to debug my program?
what does the second number contained where the error shows up but 12,5 why the , between 12 and 5 and what does the 5 represents?

Posted 5-Dec-11 20:03pm

carlmack

Updated 5-Dec-11 21:13pm

D K N T H

v4

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[no name] 6-Dec-11 2:07am

EDIT: added "pre" tag

Stefan_Lang 6-Dec-11 8:42am

I just had a thought: since in my country the 'decimal point' is represented as ',', "line 12,5" would mean "line 12.5", or, literally, halfway between line 12 and 13.

Sorry, couldn't resist ;-p

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D K N T H · Accepted Answer · 2011-12-05T20:12:00

hi..

12 means line and 5 means columns, see in your code starting from

C++

#include <iostream.h>

count 12 line(downward) you will see

C++

x= new float [0];

where x is int and you instantiate with float, obviously it cause an error..

hope find the rest of errors in your code,... enjoy the debugging :)

hope it helps...

don't forget to vote if it helps you

thanks

Emilio Garavaglia · Accepted Answer · 2011-12-05T20:26:00

Don't!
You are mixing up different concept and issues.

First: the code you post contains ERRORS not BUGS (there is a subtle difference: an error is something the violates the language syntax, that makes your code not translatable into machine code. A bug is a "logical mistake" that doesn't violate the language rules: simply you tell the machine to do something different than what you think).
Actually you cannot debug it because you have nothing (yet) to debug.

Second: don't consider long error sequences: an error can make the parser to be fooled about the meaning of the next text sequence. Correct the errors one at time and recompile, and see how the error list changes.

Third: We cannot fix a code if we don't know what that code is intended to do.
For example: you have an

int* x;

that is assigned as

x = new float [0];

Apart the nonsense of float[0], you are trying to treat as int what is allocated as float. This is incongruent, but what is the correction? change all to int, or all to float? It depends on what you want to do.

Four: you have

while cin>>x[i]

.
The correct syntax for while is

while(condition) statement

The missing () makes the compiler parser to loose about how the next statement should be interpreted. hence the following errors are not accurate.

You should correct one by one and recompile until all the syntax had been adjusted.
At that point you have a program that can be executed, and -probably- don't behave as you want to.
At that time you must debug it to see what, in fact, goes on while statements are executed and variables assigned.

Now, can you edit the question, perpending a brief explanation on what you want that code to do?

honest learner question

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