What type of operators are +=, -=, /=, *=, and %= known as?

The operators +=, -=, /=, *=, and %= are known as arithmetic assignment operators because they perform an arithmetic operation and then assign the result back to the variable. Each of these operators takes a variable, performs a mathematical operation (addition, subtraction, division, multiplication, or modulus) with another operand, and then updates the variable with the new value.

For example, when using the += operator, such as x += 5, this is equivalent to x = x + 5. This combination of calculation and assignment makes them distinct from other types of operators.

Relational operators compare values and return true or false based on that comparison, while logical operators deal with boolean logic. Increment operators are a specific type of operator that increases a variable's value by one, which is not what the arithmetic assignment operators do. Hence, correctly identifying them as arithmetic assignment operators captures their functionality in programming.