noun
adding operator
Computing term for an operator that performs addition, such as + in many programming languages.
C言語では、加減演算子として「+」を使います。
In C, '+' is used as the adding operator.
加減演算子 is a specific type of 演算子 (operator); 演算子 is the general term for any operator in computing.
Compound of 加減 (addition and subtraction) and 演算子 (operator).