Question

what is virus in case of computer

Answer 1

A computer virus is a type of malicious software that, when executed, replicates itself by modifying other computer programs and inserting its own code. When this replication succeeds, the affected areas are then said to be "infected" with a computer virus.

Answer 2

A computer virus ( Vital Information Resources Under Seize) . A computer virus is a computer program or a piece of code that is loaded onto your computer without your knowledge and run against your consent. Virus has a property to replicate itself and spread itself from one computer to another computer.
a type of malicious software that, when executed, replicates itself by modifying other computer programs and inserting its own code. When this replication succeeds, the affected areas are then said to be "infected" with a computer virus.  And when any device will connect to it then the device is also effected by the virus software........