Block Statements
Anywhere one statement can be used, a series of statements
can be used, they must be enclosed in braces {}.
Example:
     if (divisor != 0)
     {
       result = dividend / divisor;
       cout << “Division performed.” << endl;
     }
     else
     {
       cout << “Division by zero is not allowed.” << endl;
       result = 9999;
     }