techpreparation-homepage

Home  Interview Questions  Certifications  Aptitude Questions  Tutorials  Placement Papers  Search  Resume  Soft Skills  Video  Forum  Blog

Android app on Google Play

Technical Interview Questions

Java Interview Questions
Unix Interview Questions
SQL Interview Questions
C# Interview Questions
                              .........More

Aptitude Interview Questions
C/C++ Aptitude Questions
C Aptitude Questions
                              .........More

Tutorials
C Tutorial
C++ Tutorial
                              .........More

Programming Source Codes
C/C++ Source Codes
C# Source Codes
                              .........More

Online Quiz
C Online Quiz
C++ Online Quiz
                              .........More

 

 
Home > C Interview Questions >

What is the difference between calloc() and malloc() ?

1. calloc(...) allocates a block of memory for an array of elements of a certain size. By default the block is initialized to 0. The total number of memory allocated will be (number_of_elements * size).

malloc(...) takes in only a single argument which is the memory required in bytes. malloc(...) allocated bytes of memory and not blocks of memory like calloc(...).

2. malloc(...) allocates memory blocks and returns a void pointer to the allocated space, or NULL if there is insufficient memory available.

calloc(...) allocates an array in memory with elements initialized to 0 and returns a pointer to the allocated space. calloc(...) calls malloc(...) in order to use the C++ _set_new_mode function to set the new handler mode.
 

<< Go Back to C Interview Questions. 

Have a Question ? post your questions here. It will be answered as soon as possible.

Check Object Oriented Interview Questions for more Object Oriented Interview Questions with answers

Check Data Structure Interview Questions for more data structure interview questions with answers