Local Definitions Take
Precedence Over Global Ones
void SomeFunc(float c)   // Prevents access to global c
{
    float b;             // Prevents access to global b
    b = 2.3;             // Assignment to local b
    cout << “a = “ << a;  // Output global a(17)
    cout << “b = “ << b;  // Output local b(2.3)
    cout << “c = “ << c;  // Output local c(42.8)
}