C language assert usage

 

The assert macro prototype is defined in <assert. h>. Its function is to terminate a condition if an error is returned.ProgramExecution, prototype definition:

# Include <assert. h>

Void assert (INT expression );

Assert is used to calculate the expression. If its value is false (that is, 0), It prints an error message to stderr first,

Then, terminate the program by calling abort.

 

The disadvantage of using assert is that frequent calls will greatly affect program performance and increase additional overhead.

After debugging, you can disable the assert call by inserting # define ndebug before the statement containing # include <assert. h>. For example:CodeAs follows:

# Include <stdio. h>

# Define ndebug

# Include <assert. h>

 

Original article:Http://blog.csdn.net/setone/archive/2010/05/09/5573036.aspx