Write a function int fromoctaltodecimal (int* octal, int n) that given an array octal of n integers, all in the range 0 – 7, representing a number in octal representation, returns an integer corresponding to the number in decimal representation. examples: • for array 1 0 0 1 and n = 4, the function returns the integer 1 · 8 3 + 0 · 8 2 + 0 · 8 1 + 1 · 8 0 = 513. • for array 1 0 1 0 0 and n = 5, the function returns the integer 1 · 8 4 + 0 · 8 3 + 1 · 8 2 + 0 · 8 1 + 0 · 8 0 = 4096 + 64 = 4160. • for array 0 and n = 1, the function returns the integer 0 · 8 0 = 0