int testFunction()
{
    int a = 0;
    // SELECTION START for Extract method
    int b = 0;

    for( int i= 0; i< 5; ++i) {
        b=i;

        if(i == 2)
            a = b;
    }
    // SELECTION END for Extract Method

    return a;
}

// RESULT FROM EXTRACT METHOD
int testFunction()
{
    int a = 0;
    foo(a);

    return a;
}

// a is input only parameter -> a = b has no effect on the calling function a variable
void foo(int a)
{
    int b = 0;

    for( int i= 0; i< 5; ++i) {
        b=i;

        if(i == 2)
            a = b;
    }
}