Accessing array elements

Each element of an array is accessed via its basename and an index into the array. An index is also known as a subscript. Each element is accessed using the following form:

arrayName[ index ]

Here, index is a value between 0 and the array size minus 1. We can access any element of an array using this form. Just as with declaring an array, the index may be a literal value, a variable, the result of a function call, or the result of an expression, as follows:

float anArray[10] = {2.0};
int   counter = 9;
float aFloat  = 0.0; 

aFloat = anArray[ 9 ];             // Access last element.
aFloat = anArray[ counter ];       // Access last element via value 
                                   // of counter.
aFloat = anArray[ exp( 3 , 2 )  ]; // Access element at result of
                                   // function.
aFloat = anArray[ (sizeof(anArray)/sizeof(float) - 1 ]; // Access 
                                   // last element via expression...