Can you explain what is meant by 'Panic' in the context of programming?

In Go, the term "panic" denotes a mechanism for handling critical errors, where the program cannot continue normal execution. Calling panic() causes immediate termination of the current goroutine and starts a "panic" process — the call stack unwinds, calling deferred functions (defer). If the panic is not recovered with recover(), the program terminates with an error.

Example usage of panic:

func divide(a, b int) int {
    if b == 0 {
        panic("division by zero")
    }
    return a / b
}

func main() {
    result := divide(10, 0) // will cause panic
    fmt.Println(result)
}

Thus, panic is used for handling unexpected situations when further execution is impossible or dangerous.