What are...

arrays are collections of objects (variables) of same class (type). The set is designated by a common name, and each object is designated by its position in the set (index).

How could we have 5 athletes exercise?

void mainprog()

{

athlete Julia, Andrea, Ricardo, Andy, Michael;

JumpJack(Julia);

JumpJack(Andrea);

JumpJack(Ricardo);

JumpJack(Andy);

JumpJack(Michael);

}

or

void mainprog()

{

athlete Guy[5]; // declares an array of 5 athletes

for (int which=0; which<=4; which++)

{

JumpJack(Guy[which]);// each athlete does a jumpjack

}

}