Compound Assignment Statement

Compound Assignment Statement

        An Assignment Statement That is used to assign the same value to multiple variables is called compound assignment statement. The compound assignment statement is also called multiple assignment statement.

        For example, to assign a value 18 to variables a , b and c the compound assignment statement is written as;
                             a = b = c = 20 ;

Compound Assignment Operator

         C / C++ language provides compound assignment operator. These operators provide shortcut ways to add, subtract, or divide value  to or divide values to or from variables. Each command assignment operator is formed by combining an arithmetic operator and assignment operator. In C, the commonly used compound assignment operator as +=, -=, *=, /=, and %=.

Simple Assignment Statement	Compound Assignment Statement
x = x + 2 ;                x = x - 8 ;                x = x * 12 ;                x = x / 4 ;                x = x % 7 ;	x + =  2 ;                     x - = 8 ;                     x * = 12 ;                     x / = 4 ;                     x % = 7 ;

Example in C

     
#include < stdio.h >
#include < conio.h >
void main ( ) 
{
      int  a , b , c , prod ;
      a = b = c = 20 ;
      printf ( " Product = %d " , prod ) ;
}

Example in C++

     

#include < iostream >

using namespace std;

int main ( )

{

     int  a , b , c , prod ;

     a = b = c = 20 ;
     prod = a * b * c ;
     cout << " Product = " << prod ;
     return 0;
}

Output of the program Product = 8000