You can hide a name by declaring it in an enclosed block. In the following figure, i is redeclared within the inner block, thereby hiding the variable associated with i in the outer block scope.
The output from the program shown in the figure is:
i = 0 i = 7 j = 9 i = 0
The argument szWhat is considered to be in the scope of the function. Therefore, it is treated as if it had been declared in the outermost block of the function.