this is computer programming and it confuses me very much

Answer:
Using a loop or using the power function from a math library.
Explanation:
Really the question needs a bit more context. But if you want to calculate [tex]a^{b}[/tex]
and b is a whole number, you could create a loop with b steps and keep multiplying by a.
Alternatively, you can use a power function such as pow(a,b) from math.h in the C programming language.