Why is variable "num" used in addition

Question

please solve

Answer 1

You mean like these things:
for(int num = 0; num < 100; num++) { }

Oh its just a variable name specified by the user / SoloLearn to make it more understandable, either way if you change "num" to any string / char it would still work

Answer 2

could you please provide more details?

Answer 3

waiy

Answer 4

wait*