This code find maximum or largest element present in an array. It also prints the location or index at which maximum element occurs in array. This can also be done by using pointers (see both codes).
Wires are made of metal (almost always copper or aluminum, for electrical wires) because those are the best conductors. The internal components of switches are also made of metal, for the same reason. The outside parts, that you touch and see, are...
Technology was invented by brilliant minds combined. Engineers or inventors would make them commonly out of metal with electricity. The lightning rod was made out of metal. The lightbulb has a metal at the bottom and the wires act like the electricity by electrical currents going through the wires.