In modular programming, using functions is advisable when a certain code is repeated several times in a program. However, everytime a function is called the control gets transferred to that function and then back to the calling function. This consumes a lot of execution time. One way to save this time is by using macros. Macros substitute a function call by the definition of that function. This saves execution time to a great extent.
Do you know what are the properties of Union in C?
What is use of bit field?
Explain bitwise shift operators?
Can you please explain the difference between exit() and _exit() function?
What is _exit() function?
What is memcpy() function?
What is exit() function?
What is strcpy() function?
Can you please explain the difference between malloc() and calloc() function?
What is malloc() function?
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