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In computer programming, a number without a variable is referred to as a "magic number," because it seems to appear out of nowhere (like magic!). This is typically considered a bad thing, as that number will have no implicit meaning.
{
diameter = 10;
area = 3.14 * diameter; // here 3.14 is a magic number
}
{
pi = 3.14
diameter = 10;
area = pi * diameter; // now the meaning of this statement is unambiguous
}
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What is the optional in a variable declaration statement?
Optional is the assignment of the value of course.int number; //Variable Declarationint number=2; //Assignment Declaration
What is the Algorithm for exchanging values of two variables?
There are three primary algorithms to exchange the values of two variables. Exchange with Temporary Variable temp = a; a = b; b = temp; Exchange Without Temporary Variable Using Exclusive Or a = a ^ b; b = b ^ a; a = a ^ b; Exchange Without Temporary Variable Using Arithmetic a = a + b; b = b - a; a = a - b;
What is Variable Turbine Technology?
various number of spools
Which of the following is not a variable data type real integer number or string?
FILE, struct stat and struct tm are some examples.
Why static variables in a function have global extent?
A variable declared static outside of a function has a scope the of the source file only. It is not a global variable. A variable declared outside of a function and without the static qualifier would be a global variable.
