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...
As electricity passes through a metal wire it causes an energy field or magnetic field. In a similar way, human electricity in the brain and nervous system creates human magnetic fields. There are billions of nerve impulses in the body and these are constantly creating complex human magnetic fields.