Converting pseudocode to C++

[asc173]

can anyone tell me how to write this in normal c++? thanks!

input a value to factor
while input value > 1

let residual = input value
let factor = 2
while factor <= residual
while factor divides residual
(i.e. remainder = 0)
output factor
divide residual by factor
increment factor

input next value to factor

as well as this:

open an input file named "polytest" (or "polytest.t xt")
while end of file not yet reached

input number of vertices in the polygon
assume first vertex is the origin (0,0)
input second vertex
determine vector from origin to second vertex
for each additional vertex in the data
input next vertex
determine vector from last vertex to new vertex
determine whether vector is a left or right turn
determine vector back to the origin
and whether it is a left or right turn
if all turns are left turns, or all are right turns
the polygon is convex
else the polygon is concave

[hsn]

THIS IS an easy question
you have to work a little hard to solve it
you question is the answer
just convert the lines that you posted to a c++ code

and believe me it is very easy just think a little harder

GOOD LUCK

[Laharl]

What specific areas are giving you a problem?

If the answer is everything, you've got a good algorithm base, but if you fill in the details, it'll go a long way towards helping you implement it.

[asc173]

i'm just trying to figure out the spot where to put the loops
here's what i got so far:


cout <<"Please input number to be factored:" <<
cin >> number >> endl;
while (number>1){

res = number;
factor = 2;
rem = (res/factor)
while (factor <= res){
while ((res/factor), rem ==0){
cout << factor <<;

[Laharl]

That looks good, except that the third while loop needs proper syntax. The % operator (modulus) finds the remainder, eg 1 % 2 = 1, because 1/2 = 0x2 + 1.

Note that you can't input an endl, that's an output flag. Just move it to after the dangling << operator, like this:

[code=cpp]
cout << "Enter the number." << endl;
cin >> number;
[/code]

Also, you need to have some sort of increment/decrement operation as part of the loop, as the algorithm you're using says. Basically, when a variable's size is being used as part of a while loop, you need to change that value, otherwise you'll get an infinite loop...

You're on the right track, just keep following your algorithm and you'll get there just fine.