C Programming language

Assignment Operators

Compound assignment (+=, -=, *=, /=, %=, >>>=, <<=, &=, ^=, |=), when want to change the current stored value of a variable by performing an operation we can use compoundassignment operators:

Example

int main ()
{
  int a, b=3;
  a = b;
 a+=10;// equivalent to a=a+10
 printf("\n%d",a );
 return 0;
}

The Assignment Operator evaluates an expression on the right of the expression and substitutes it to the value or variable on the left of the expression.

x = a + b

Here the value of a + b is evaluated and substituted to the variable x. In addition, C has a set of shorthand assignment operators of the form.

Var oper = exp;

Here var is a variable, exp is an expression and oper is a C binary arithmetic operator. The operator oper = is known as shorthand assignment operator

Example

x + = 1 is same as x = x + 1 

The commonly used Shorthand assignment operators are as follows:

Shortening even more some expressions, the increase operator (++) and the decrease operator (--) increase. OR Reduce by one the value stored in a variable. They are equivalent to +=1 and to -=1, respectively. Thus: