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The #undef Directive
This directive undefines a previously explained macro. For, example the following will give an error since PI is undefined.
#define PI 3.14285
void main()
{
cout<< PI; // no error here
# undef PI;
cout << PI; // error after undef.
}
The Special Pointer 'this' When various instances of a class come into existence, it naturally follows that each instance has its own copy of member variables. If this were not
Increment and Decrement Operators. The operator for increment is '++' and decrement is '-'. These operators enhances or decrease the value of a variable on which they are ope
Run the following C++ program with and without preprocessor variable POSTFIX defined. #include using namespace std; extern "C" int atoi( const char *str );
Syntax rules for writing constructor functions Its name must be similar as that of the class to which it belongs. It is declared with no return type (not even void). Ho
What are the debugging methods you employ while came across a problem? A: Debugging with tools such as: 1. DBG, GDB ,Forte, Visual Studio. 2. Using tusc to trace
Use 16 digit credit card numbers that contain 15 digits an 1 check digit. The format of the card number consists of the 15 digits followed by the check digit. The check digit is co
Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b
Write a simple telephone book program that stores the names and phone numbers of your friends/acquaintances in a file. Your program should have the abilities to: a. Add entries (n
Bit-wise Operators Some applications require operations to be done on dissimilar bits of a byte separately. Bit-wise operators offer a facility to do just that. There are vario
Define the Classification of Operators in C Language? Depending on the function performed the operator can be classified as 1. Arithmetic Operator 2. Logical Operator 3. Inc
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