Interested to Buy Any Domain ? << Click Here >> for more details...
we have to use realloc only after malloc or calloc ? or we
can use initially with out depending on whether we are
using malloc or calloc in our program ?
- 2 Answers
- 5747 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Hi Vignesh,
Ur explanation about realloc() is correct. But the answer
is wrong. Because, it is possible to use realloc() before
using malloc() or calloc() function be used.
Lets, try the below code.
int *ptr;
ptr = (int *)realloc(NULL, 5);
printf("%d \n", ptr);
In this code, realloc will allocate five bytes of memory
and will return a valid pointer. It can be used in ur
program.
Conclusion:
It simple means that, if u pass a NULL pointer to a realloc
() function, it will exactly behave as like malloc().
| Is This Answer Correct ? | 6 Yes | 0 No |
ya we must use realloc (RE-ALLOCATION) only after malloc (MEMORY ALLOCATION) ....
actually realloc is a fuction which will be mainly implemented after knowing the accurate amount of memory that is going to be used... if our memory is allocated using malloc is less compared to the total values that is going to be stored we will RE-ALLOCATE the memory to our wish to store all the values...
but in other case if the data has been stored in the allocated block by malloc , but still more is remaining we can again RE-ALLOCATE usin realloc funcion.......
thank u
| Is This Answer Correct ? | 3 Yes | 2 No |
Design a program which assigns values to the array temperature. The program should then display the array with appropriate column and row headings.
When I tried to go into a security sites I am denied access and a message appeared saying 'applet not initialize'. How can I rectify this problem.
Create a registration form application by taking the details like username, address, phone number, email with password and confirm password (should be same as password).Ensure that the password is of 8 characters with only numbers and alphabets. Take such details for 3 users and display the details. While taking input password must appear as “****”.
Write a C program to accept a matrix of any size. Find the frequency count of each element in the matrix and positions in which they appear in the matrix
how would a 4*3 array A[4][3] stored in Row Major Order?
How can you find the day of the week given the date?
What is #define size in c?
What does the message "warning: macro replacement within a string literal" mean?
What is function pointer c?
What is use of #include in c?
what is the advantage of software development
How can you find out how much memory is available?
C 
