Compile Error vs Execute Error

What is the difference between a "compile error" and an "execute error" in GAUSS?

1 Answer

0

When you run a GAUSS program there are two major steps that occur.

First GAUSS takes the text inside your program file and turns it into a program that the computer can run. This is called compiling a program.

The second step is to run the program that was just compiled. This is when GAUSS performs the calculations and it is called run-time or execution-time.
 
Compile-time errors
A compile time error is an error that occurs when GAUSS was trying to compile the program. These usually occur because the program is not a legal GAUSS program. For example, GAUSS does not have a function named thisIsNotAValidFunction. So if we try and run this program:

thisIsNotAValidFunction();

GAUSS will give us the following compile-time error: Undefined Symbols. This is because GAUSS does not know what thisIsNotAValidFunction is, so it cannot compile it into an executable program.

Compile-time errors cannot be run through the debugger, because the debugger allows you to step through the execution of a program. As we have seen above, a GAUSS program must first be successfully compiled before it can be executed (or run).
 
Run-time or Execute-time errors
If a program is successfully compiled and begins to run before it hits an error condition, this will be a run-time or execution-time error. For example, the code:

x = { 1.1, 2.1, 3.1, 4.1 };
z = x[5];

will produce the run-time error: G0058 : Index out of range. In this case, GAUSS was able to compile the program, but when it tried to execute the second statement z = x[5];, it failed. This failure occurred because, the program was trying to assign the fifth element of the variable x to the new variable z, when x has only four elements.

Run-time errors can be detected using the GAUSS debugger, which is an excellent tool for helping you to locate the source of problems in your code.


You must login to post answers.

Have a Specific Question?

Get a real answer from a real person

Need Support?

Get help from our friendly experts.

FREE REQUEST A QUOTE NOW

Thank you for your interest in the GAUSS family of products.

© Aptech Systems, Inc. All rights reserved.

Privacy Policy | Sitemap