Addition Operator (+) Summary Adds two numbers. Syntax expression1 + expression2 Parameters expression1 An expression that evaluates to a number. expression2 An expression that evaluates to a number. Description For numeric data, the + operator adds two numbers. For example, 2 + 2 will evaluate to the result 4. Differences from JavaScript In JS++, arithmetic cannot be performed on Booleans. In JavaScript, for these operations, false is treated as 0 and true is treated as 1. In JS++, arithmetic operations cannot be performed on null. In JavaScript, null is treated as 0. In JS++, undefined cannot be used in arithmetic operations. In addition, NaN can never occur from integer arithmetic. In JavaScript, an arithmetic expression that evaluates to undefined or NaN results in NaN for the result. Examples Basic Usage 1234import System; Console.log(1 + 1); // 2Console.log(2 + 2); // 4 See Also Concatenation Operator (+) Subtraction Operator (-) Multiplication Operator (*) Division Operator (/) Modulus Operator (%) Types Operator Precedence Share HTML | BBCode | Direct Link
