Using an Element’s Subscript

The range-based for statement can be used in place of the counter-controlled for statement whenever code looping through an array does not require access to the element’s subscript. For example, totaling the integers in an array (as in Fig. 7.8) requires access only to the element values—the elements’ subscripts are irrelevant. However, if a program must use subscripts for some reason other than simply to loop through an array (e.g., to print a subscript number next to each array element value, as in the examples early in this chapter), you should use the counter-controlled for statement.