main()
{
int ptr[] = {1,2,23,6,5,6};
printf("%d",&ptr[3]-&ptr[0]);
}
- 8 Answers
- 20959 Views
- Vector, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sandeep
3
because aray pointer arthematic considers positions(index) of aray
| Is This Answer Correct ? | 46 Yes | 10 No |
Answer / shivam jindal
That should print a 3. It's really the same as
printf("%d", 3-0);
...since:
ptr[3] is the 4th element in the ptr[] array.
&ptr[3] is a pointer to the 4th element in the ptr[] array.
&ptr[0] is similarly a pointer to the first element in ptr[].
&ptr[3] - &ptr[0] is a subtraction of two pointers. That's only defined (in standard C/C++) for pointers to elements in the same array, like in this case, and it's defined as the difference between the index values. That's where the 3-0 comes from.
The result of a pointer difference is an int. &ptr[0] - &ptr[3] results in 0-3 which is -3.
| Is This Answer Correct ? | 5 Yes | 3 No |
Answer / dipak
In int at least 2 bytes are used for size and we know that &ptr[] gives the address of ptr .
&ptr[3]-&ptr[0]
Size of &ptr[3] is 3*2=6 times greater than Size of &ptr[0] is 1*2=2
ptr[0] also have any value that's why I consider it 1
So 6-2=4
| Is This Answer Correct ? | 4 Yes | 3 No |
Answer / mitesh mahera
I need a answer aboutthis question..if any can ?!
| Is This Answer Correct ? | 4 Yes | 6 No |
Answer / baba
Ans: 12
The expression in printf evaluates the difference of the memory addresses of ptr[3] and ptr[0]
| Is This Answer Correct ? | 5 Yes | 10 No |
main() { int i; printf("%d",i^i); }
How can I send mail from within a c program?
What is time null in c?
Why are all header files not declared in every c program?
How would you obtain the current time and difference between two times?
Do you know the use of 'auto' keyword?
Explain this code. #include <stdio.h> void f1(int *k) { *k = *k + 10; } main ( ){ int i; i = 0; printf (" The value of i before call %d \n", i); f1 (&i); printf (" The value of i after call %d \n", i); }
write the program to find multiplication of 2-D matrix??????????
explain memory layout of a C program
what is the difference between getch() and getche()?
What are c header files?
How to delete a node from linked list w/o using collectons?
C 
