1. Advanced Data Structure using C++

LECTURE NOTES OF ADVANCED DATA STRUCTURE (MT-CSE 110)
This is because in case of call by value the value is passed to function named as
interchange and there the value got interchanged and got printed as
x1=70 y1=50
and again since no values are returned back and therefore original values of x
and y as in main function namely
x=50 y=70 got printed.
But in case of call by reference address of the variable got passed and therefore
whatever changes that happened in function interchange got reflected in the
address location and therefore they got reflected in original function call in
main also without explicit return value. So value got printed as *x=70 *y=50 and
x=70 y=50
DYNAMIC MEMORY ALLOCATION
Your computer's memory is a resource ‐ it can run out. The memory usage for
program data can increase or decrease as your program runs.
Up until this point, the memory allocation for your program has been handled
automatically when compiling. However, sometimes the computer doesn't
know how much memory to set aside (for example, when you have an unsized
array).
The following functions give you the power to dynamically allocate memory for
your variables at RUN‐TIME (while the program is running). For the past
tutorials, memory was allocated when the program was compiled (i.e. COMPILE‐
TIME).
To use the four functions discussed in this section, you must include the stdlib.h
header file.
Prepared By :­
Er. Harvinder Singh
Assist Prof., CSE, H.C.T.M (Kaithal) Page ‐ 64 ‐