Write C++ Program to demonstrate the working of sizeof & ternary operators

Questions:

Write C++ Program to demonstrate the working of sizeof & ternary operators

Explanation:

Besides the operators discussed above, there are few a other important operators including sizeof and ? : supported by the C Language.

Operator	Description	Example
sizeof()	Returns the size of a variable.	sizeof(a), where a is interger, will return 4.
&	Returns the address of a variable.	&a; returns the actual address of the variable.
*	Pointer to a variable.	*a;
? :	Conditional Expression	If Condition is true ? then value X : otherwise value Y

Code:

/**************************************************|

/*************C++ Programs And Projects************|

***************************************************/

#include <iostream>

Using namespace std;

int main()

{

   int a = 4;

   Short b;

   Double c;

   int* ptr;

   /* example of sizeof operator */

   cout<< "Line 1 - Size of variable a = " << sizeof(a) << endl;

   cout<< "Line 2 - Size of variable b = " << sizeof(b) << endl;

   cout<< "Line 3 - Size of variable c = " << sizeof(c) << endl;

   /* example of & And * operators */

   ptr = & a; /* 'ptr' now contains the address of 'a'*/

   cout<< "value of a is = " << a << endl;

   cout<< "*ptr is  ." <<* ptr << endl;

   /* example of ternary operator */

   a = 10;

   b = (a == 1) ? 20: 30;

   cout<< "Value of b is = " << b << endl;

   b = (a == 10) ? 20: 30;

   cout<< "Value of b is = " << b << endl;

}

Output:

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