C program please

Glven an int variable n that has been initializes to a positive value and, in addition, int variables k and total that have already been declared, use a for loor to compute the sum of the cubes of the first n whole numbers, and store this value in total. Thus it nequals 4, your code should put 1'1"1 +222 + 333 + 4*4*4 into total. Use no variables other than n, k, and total