Macros in c

1. What is macro?

2. Types of macros

3. By using _________ we will define macro

4. Simple macro is ________

5. To un-define a macro_______ we will use

6. Example for nested macro

7.Macro is a Pre-processor directive.

8. C compiler replaces all the occurrence of a macro tag with pre defined value ( or text) that is known as

9 . What will be the output of following code

#include<stdio.h>

#define abc(a,b) (a>b)?a:b;

main()

{

int k,m=10,n=5,p=0;

k=abc(++m, n++);

printf(“%d,%d,%d\n”,m,n,k);

}

10. _______ directive we are going to use whether macro is defined are not

11. What will be the output of following code

#include<stdio.h>

#define abc(a) (a*a)

main()

{

int k,m=4;

k=abc(m+3);

printf(“%d,%d\n”,m,k);

}

12. _______ many types of macros we have

13. Find the output for bellow program?

#include<stdio.h>

#define PRINT(int) printf(“%d”,int)

main()

{

int k,m=4;

PRINT(m);

printf(“ ”);

PRINT(‘A’);

}

14. What will be the output for  following code

#include<stdio.h>

#define SMALL(x,y) (x>y)?x:y;

main()

{

int k,m=4;

k=SMALL(4,5);

printf(“%d %d\n”,k,SMALL(2,3));

}

15. Example for Macro with argument.

16. What will be the output of following code?

#include<stdio.h>

#define swap(x,y) int t;t=x,x=y,y=t;

main()

{

int k=9,m=4;

swap(m,k)

printf(“k=%d m=%d\n”,k,m);

}

17. Find the output for following program

#include<stdio.h>

#define ram “Ram”

main()

{

printf(“ram”);

}

18. Applications of macros

19. Advantages of macros

20. Disadvantages of macros