Interested to Buy Any Domain ? << Click Here >> for more details...
#define min((a),(b)) ((a)<(b))?(a):(b)
main()
{
int i=0,a[20],*ptr;
ptr=a;
while(min(ptr++,&a[9])<&a[8]) i=i+1;
printf("i=%d\n",i);}
- 3 Answers
- 16135 Views
- I also Faced
- E-Mail Answers
Answer Posted / vignesh1988i
here the value will be 3.
EXPLANATION:
here the #define macros will blindly substitute the values
in the while loop before compailation.. then when it compails...
1)we will have the expanded macros like this:
while((ptr++<&a[9]?ptr++:&a[9])<&a[8])
i++;
hrer when the loop runs for the first time ptr will
increment by 2 since it is a integer type, which allocates 2
bytes.
first see the layout:
10 12 14 16 18 20 22 24 26 28 30 .....
| | | | | | | | | | | |
0 1 2 3 4 5 6 7 8 9 10 ....
0,1,2,3 represents index values...
10,12,14 represents addresses....
so the ptr variable will have the base address of array a.
when comin to while loop, it gets incremented to the next
location , address is 12,and go and check wit the address of
&a[9] in our case it is 28. so naturally it wil become true
so it executes the statement after ? symbol.. again in that
ptr++ is given so again ptr will be incremented to 14.. so
14 will be compared with &a[8] ,likely to be 26. it is TRUE
so the whole loop is true ,so i gets incremented so i=1.
next time ptr adds to 16 and then 16<28 and again ptr gets
incremented to 18 and 18<26 and whole while becomes true so
i will become 2.
similarly it will again increments ptr to 20 an dthis
becomes true an ptr again gets incremented to 22 and it
checks whether 22<26! yes, it will increment i to 3.
IMPORTANT:
after that it increments ptr to 24 and executes the
operation after ? operator and again ptr will have 26, this
26 is checked with 26 (&a[8]) the whole while loop becomes
false...
so it wont go to i++, it will printf the printf statement so
i=3.
| Is This Answer Correct ? | 3 Yes | 2 No |
Post New Answer View All Answers
What are the application of void data type in c?
Write a program to compute the similarity between two strings - The program should get the two strings as input - Then it will output one single number which is the percentage of similarity between the two strings
What is pointer in c?
Which control loop is recommended if you have to execute set of statements for fixed number of times?
What are the different file extensions involved when programming in C?
Does * p ++ increment p or what it points to?
What is c language & why it is used?
How many levels of pointers have?
Write a C/C++ program that connects to a MySQL server and checks if the InnoDB plug-in is installed on it. If so, your program should print the maximum number of concurrent threads that the InnoDB plug-in can create.
What do you mean by dynamic memory allocation in c? What functions are used?
what is the significance of static storage class specifier?
Write a program to reverse a given number in c?
How do you do dynamic memory allocation in C applications?
What is scope rule of function in c?
write a c program to do the following: a) To find the area of a triangle. b) To convert the temperature from Fahrenheit to Celsius. c) To convert the time in hours : minutes : seconds to seconds.
