The operator?

The operator?

• The operator? is used to replace if-else statements.

if (condition)
var = expression1;
else
var = expression2;

• The operator? is called a ternary operator because it requires three operands.

Exp1 ? Exp2 : Exp3;

• Exp1 is a boolean expression and Exp2 and Exp3 are expressions of any type but void.

• Example:

if (val < 0)
absval = -val;
else
absval = val;

• In ternary:

absval = val < 0? -val : val;

• Example:
  

• result receives the result of dividing 100 by i.

• Division only occurs if i is not zero; otherwise, result receives the value zero.

• The value produced by the operator? does not need to be assigned to a variable.

• The value of the operator? can be used as an argument in a method call.

• If the expressions are of type boolean, the operator ? can be used as a conditional expression in a loop or if statement.

• The program can be rewritten more efficiently while maintaining the same result.

• If i is zero, the if statement will result in false, preventing division by zero and displaying the result. Otherwise, division will occur.

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