Please answer only question 17! 15 Consider the directive#undef TRY_MEIf TRY ME was previously defined with a #define macro, this line causes the macroto be discarded. If TRY_ME was not previously defined, then the line should have noeffect. Write some code to test what happens on your system. If TRY_ME was notpreviously defined, does your system complain?int main(void){16 The assert () macro is supposed to be discarded if the macro NDEBUG is defined.Does it work as expected on your system? Try the following program:#defineNDEBUG#include int a = 1, b = 2;assert (a > b);return 0;▼ Exercises 401ob enotimit81#undef assertis in the assert.h header file.OS}What happens if you interchange the first two lines of the program?17 In the program in the previous exercise, replace the two lines at the top with the fol-lowing three lines:#include #define NDEBUG#include Does your C compiler complain? Should your C compiler complain? int: Check tosee if the line

C is a general-purpose, procedural programming language that is widely used for system programming…

17 In the program in the previous exercise, replace the two lines at the top with the fol- lowing three lines: #include #define NDEBUG #include Does your C compiler complain? Should your C compiler complain? ¡int: Check to see if the line #undef assert is in the assert.h header file.

17 In the program in the previous exercise, replace the two lines at the top with the fol- lowing three lines: #include #define NDEBUG #include Does your C compiler complain? Should your C compiler complain? ¡int: Check to see if the line #undef assert is in the assert.h header file.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Header files

A file with an extension that has some predefined declarations and definitions is called a header file. Every computer program imports a set of header files to perform common tasks such as getting input, displaying output, and so forth. Every language has different header files (such as C, JAVA, Python, and C++). In this article, header files are explained mainly in the context of the C/C++ language.

Question

Please answer only question 17!

15 Consider the directive
#undef TRY_ME
If TRY ME was previously defined with a #define macro, this line causes the macro
to be discarded. If TRY_ME was not previously defined, then the line should have no
effect. Write some code to test what happens on your system. If TRY_ME was not
previously defined, does your system complain?
int main(void)
{
16 The assert () macro is supposed to be discarded if the macro NDEBUG is defined.
Does it work as expected on your system? Try the following program:
#define
NDEBUG
#include <assert.h>
int a = 1, b = 2;
assert (a > b);
return 0;
▼ Exercises 401
ob enotimit
81
#undef assert
is in the assert.h header file.
OS
}
What happens if you interchange the first two lines of the program?
17 In the program in the previous exercise, replace the two lines at the top with the fol-
lowing three lines:
#include <assert.h>
#define NDEBUG
#include <assert.h>
Does your C compiler complain? Should your C compiler complain? int: Check to
see if the line

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