All in C programming

A)

Given int variables k and total that have already been declared, use a for loop to compute the sum of the squares of the first 50 positive integers and store this value in total. Thus your code should put 1*1 + 2*2 + 3*3 +... + 49*49 + 50*50 into total. Use no variables other than k and total.

B)

Assume that an array of ints named a that contains exactly five elements has been declared and initialized. In addition, an int variable jhas also been declared and initialized to a value somewhere between 0 and 3.

Write a single statement that assigns a new value to the element of the array indexed by j. This new value should be equal to twice the value stored in the next element of the array (i.e. the element after the element indexed by j).

Do not modify any other elements of the array!

C)

Assume that an array of integers named a that contains exactly five elements has been declared and initialized.

Write a single statement that assigns a new value to the first element of the array.

This new value should be equal to twice the value stored in the last element of the array.

Do not modify any values in the array other than the first element.