expection handing: error message "undefined symbol try . . "

arvindkuk · #1 January 7th, 2009, 04:01 AM

how to work with expection handing in which when i am using try block then the error message coming that "undefined symbol try" why it is so, please solve my problem.

gpraghuram · #2 January 7th, 2009, 05:48 AM

Can you post the piece of code where u are getting the error?
Also which compiler u are using?

Raghu

arvindkuk · #3 January 7th, 2009, 06:35 AM

Expand|Select|Wrap|Line Numbers

  
//Compile is turbo c++
 
#include<iostream.h>

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int a,b;

cout<<"Enter value of a and b\n";

cin>>a>>b;

int x=a-b;

try

{

if(x!=0)

{

cout<<"Result(a/x)="<<a/x<<endl;

}

else

{

throw(x);

}

}

catch(int i)

{

cout<<"Exption caughg:x="<<x<<endl;

}

cout<<"End";

getch();

}

r035198x · #4 January 7th, 2009, 07:32 AM

Are you compiling as c or c++?
Is that the only error message you are getting?

arvindkuk · #5 January 7th, 2009, 09:33 AM

then what I should do and how can i run my programme

Banfa · #6 January 7th, 2009, 10:22 AM

You should start by re-writing void main() as int main(). Main returns an int, always, anything else is undefined behaviour.

r035198x · #7 January 7th, 2009, 10:31 AM

Quote:

Originally Posted by arvindkuk

then what I should do and how can i run my programme

I don't think you started learning C++ by learning exceptions. How did you compile your hello world c++ program?

arvindkuk · #8 January 7th, 2009, 11:08 AM

my problem is "undefined symbol try" how can I handle this

r035198x · #9 January 7th, 2009, 11:47 AM

Your problem is not being sure which language you are coding in. You want to use try/catch exception handling so you must use c++ not c.
For c++ you need to change these things

1.) replace #include<iostream.h> with #include<iostream>
2.) Remove all other includes
3.) add using namespace std; before the definition of main
4.) Make main return an int not void. void is wrong even in c
5.) Remove lines with clrscr(); and getch(); in your code
6.) Compile the file as a c++ file not as a c source file.

Banfa · #10 January 7th, 2009, 12:13 PM

Something obvious that has not been mentioned yet is what is the name of your file?

if it is <something>.c then the compiler will almost certainly be compiling it as C code it needs to be <something>.cpp

weaknessforcats · #11 January 7th, 2009, 04:57 PM

Also, keep in mind that exception handling is often turned off in most C++ compilers by default. You have have to enable it by setting a compiler switch.

That would explain your indefined symbol.

expection handing: error message "undefined symbol try . . "

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re: expection handing: error message "undefined symbol try . . "

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re: expection handing: error message "undefined symbol try . . "

re: expection handing: error message "undefined symbol try . . "

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re: expection handing: error message "undefined symbol try . . "

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