C++ offers special shorthands that simplify the coding of a certain type of assignment statement. For example,
can be written as
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++ Programming Online Test
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