Final answer:
The function definition void demo(int intval, float val) is a valid function definition in Computers and Technology.
Step-by-step explanation:
The subject of this question is Computers and Technology. The question pertains to the definition of a function using the void keyword.
In programming, the void keyword is used to indicate that a function does not return any value. The void function definition void demo(int intval, float val) means that the function named demo takes two parameters: an integer named intval and a float named val. This function does not return any value.
In summary, the function definition void demo(int intval, float val) is a valid function definition in the field of Computers and Technology.