Array indexes

[C++ Programming]

i need help with writing a c code

lets say i have an array[5]
i need to make a new array that gets the indexes of the array[5] from the maximum number to the minimum one.

example
{2,5,1,8,4}
my new array of indexes will be (counting from ZERO)
{3,1,4,0,2}


i though of sorting it and save the indexes in a temporary array or something but it didnt work
any ideas how can i solve this ?