Operators/Addition

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Addition is an operation performed on two numeric values. It is indicated by the + operator (the plus sign), used as an associative, commutative, binary infix operator.

Notation

α + β;

Where α and β are both numeric (int or float). If α_type ≠ β_type, then the value with the less precise type will be coerced to the value of the more precise type (that is, an int will be coerced to a float, and an unsigned int will be coerced to a signed int, and etc.)

Assignment

Α += β;
Α = Α + β;

Where

• Α is the variable being modified (either an int or float).
• β is the variable doing the modification.

The first example is shorthand for the second.

Example

int alpha = 10;
int beta = 5;
float pi = 3.14159;
float rho = 2.71828;
 
output << alpha + beta; // Outputs "15".
output << pi + rho; // Outputs "5.85987".
output << alpha + pi; // Outputs "13.14159", as alpha is less precise than pi.
 
beta += rho;
output << beta; // Outputs "7", beta is first cast as a float, making the result 7.71828.
                // It's then recast to an int, and loses the integer value.
 
output << pi + beta; // Outputs "9.71828", as beta is cast as a float, becoming 7.0.

See Also

• Incrementation
• Subtraction
• Concatenation