Question

Given an int variable n that has been initialized to a positive value and, in addition, int variables k and total that have already been declared, use a for loop to compute the sum of the cubes of the first n whole numbers, and store this value in total. Thus if n equals 4, your code should put 1*1*1 + 2*2*2 + 3*3*3 + 4*4*4 into total. Use no variables other than n, k, and total.

Answer 1

Answer:

total=0;

for(k=1;k<=n;k++){

total+=k*k*k;

}

Just to clarify, the curly brackets are optional when only one operation is done by the loop.

Hope this helps!

Answer 2

Explanation & answer:

We do not know which language you are using, so a pseudocode will be given, it will be similar to java or C/C++.  For other languages, you can adapt to the syntax of the target language.

int n=5;

//

total = 0  // initialize  variable to store total value, already declaired.

// k will be used as a dummy variable, already declared

for (k=1; k<=n; k++){

   total+=k*k*k;  // k*k*k works for almost all languages.  adapt as needed

   }

print(n, total)