Log onto a workstation. Open an hpterm window. Run Chez Scheme by typing scheme in the hpterm window. In Scheme, processing proceeds by typing expressions into the Scheme environment. After each expression is entered, Scheme reads the expression, evaluates the expression to determine its value, and prints the resulting value.
Numbers are expressions, whose value or meaning is the number itself.
Type several numbers into Chez Scheme , typing one number at a time. In each case, note how Chez Scheme responds. Enter a read number with many digits. Determine what happens when you enter a fraction. In Scheme, symbols may act as variable names, but they do not have a value until we give them one.