C++ Shorthand

C++ offers special shorthands that simplify the coding of a certain type of assignment statement. For example,

a = a + 10;

can be written as

a += 10;

The operator += tells the compiler to assign to a the value of a+10. This shorthand works for all the binary operations in C++ (those that require two operands). The general form of C++ shorthand is :

var = var operator expression ;

is same as

var operator = expression ;

Following are some examples of C++ shorthands :

x - = 10 ;      equivalent to      x = x - 10 ;
x ∗ = 3 ;      equivalent to      x = x ∗ 3 ;
x / = 2 ;      equivalent to      x = x/2 ;
x % = 2 ;      equivalent to      x = x % z ;

C++ Shorthand Example

Let's take an example, demonstrating shorthand concept in C++

/* C++ Shorthand */

#include<iostream.h>
#include<conio.h>
void main()
{
   clrscr();

   int x, res1, res2;

   x = 20;
   x = x - 10;
   res1 = x;
   x = 20;
   x -= 10;
   res2 = x;
   cout<<res1<<"\t"<<res2<<endl;

   x = 20;
   x = x * 3;
   res1 = x;
   x = 20;
   x *= 3;
   res2 = x;
   cout<<res1<<"\t"<<res2<<endl;

   x = 20;
   x = x/2;
   res1 = x;
   x = 20;
   x /= 2;
   res2 = x;
   cout<<res1<<"\t"<<res2<<endl;

   x = 20;
   x = x % 2;
   res1 = x;
   x = 20;
   x %= 2;
   res2 = x;
   cout<<res1<<"\t"<<res2<<endl;

   getch();
}

Here is the sample output of the above C++ program:

C++ Online Test

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