Having problems with Euclid's Algorithm

[kzh7]

I am trying to make a Euclid’s Algorithm with Loop While process.
I need to get the program to:
input: smaller number followed by larger & output: greatest common divisor
1. Read two numbers
2. print out both numbers
3. REMAINDER = remainder of LARGER/SMALLER.
4. Loop while REMAINDER is not zero:
a. Set LARGER to SMALLER.
b. Set SMALLER to REMAINDER.
c. REMAINDER = remainder of LARGER/SMALLER.
d. End loop.
5. Print ‘Greatest common divisor is,’SMALLER.
6. end the program.....

So far I have:

#include <iostream>

using namespace std;

int main()
{
    int a;
    int b;
    int remainder;

    cout << "Please select an integer for a\n"; // value a must less than value b
    cin >> a; // select a value
    cout << "Please select an integer for b\n"; // value b must be greater than a
    cin >> b; // select a value greater than value a
    cout << "The smaller number is: " << a; // outputs the smaller value
    cout << "The larger number is: " << b; // outputs the greater value

    remainder = a % b

    while (remainder != 0)
    {
        b = a
        a = remainder
        remainder = b/a
    }
    cout << endl;
    cout << "Greatest common divisor is: " << a;
    return 0;
}

all my compiler is telling me is that line 20 has
[error: expected ';' before 'while']

[condor]

Of course, put a semicolon (;) in the lines 18, 22-24.

[kzh7]

Thank you (^~^)

[condor]

You're welcome! :))