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Why are all header files not declared in every C program?
- Declaring all header files in each program would result in increase in overall file size and load of the program. It isn't a good programming.
- Choice header files which you want to declare in the program depends on commands/functions you want to use in program. Every header file comprise different commands and functions. So we use only the files relevant to our program.
Q: Name the operators which cannot be overloaded? A:sizeof, ., .*, .->, ::, ?:
The #undef Directive This directive undefines a previously explained macro. For, example the following will give an error since PI is undefined. #define PI 3
A: A smart pointer is a C++ class which mimics a regular pointer in syntax and some semantics, however it does more. Since smart pointers to distinct types of objects tend to have
With this assignment you will build a toy program that manipulates pointers to integers. You will develop the same main program fragment in both C and Assembler. Thus, you'll get t
what is logic in C
Aim: To implement a program to find area of rectangle, surface area of box and volume of box using virtual functions. Code: class rect {
Binomial coefficients are the numeric factors of the products in a power of a binomial such as (x + y)n. For example, (x + y)2 = x2 + 2 x y + y2 has the coefficients 1 2 1. Binomia
A: Something to let your class to grant access to another class or function. Friends may be either classes or functions. Class grants access privileges to its friends. In genera
Changing Field width The printf() and scanf() functions from the standard library, use width specifier for controlling the width of its output . Similarly, the ostream class al
source code
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