Golang detect system interrupt

I wrote an utility to batch delete files as followed

		stdinScanner := bufio.NewScanner(os.Stdin)
		fileScanner := bufio.NewScanner(inFile)
		for fileScanner.Scan() {
			target := strings.TrimSpace(fileScanner.Text())
			if len(target) > 0 {
				printUtf16("Delete %s?\n", target)
				stdinScanner.Scan()
				if len(stdinScanner.Text()) > 0 {
					fmt.Println("Non empty return not allowed")
					os.Exit(1)
				} else {
					// TROUBLE: Had to sleep here or interrupt does not work
					time.Sleep(100 * time.Millisecond)
					e := os.Remove(target)
					if e != nil {
						panic(e)
					}
					printUtf16("%s deleted\n", target)
				}
			}
		}

I have an inFile that specifies a list of files I want to delete. For every file to delete, I prompt myself just to be sure. Only if I enter empty output would the program delete the file and proceed to the next file.

Now note the very ugly time.Sleep in this middle of the code. I have noticed that if I did not insert that time.Sleep the application behaves unexpectedly when I press ctrl+c. Seems like after ctrl+c is pressed stdinScanner.Scan() would return false and no error and stdinScanner.Text() would be empty just as I expected when an empty input is entered. The file that I was prompted for would be deleted before the application is interrupted and quits.

I have noticed that adding this time.Sleep allows the application more than sufficient time to exit and prevent the current file to be deleted. However I really dislike this solution. Just asking if there is a function I can call instead of the time.Sleep to check if the application is currently processing a keyboard interrupt and if so we don't delete the current file?

Thanks Volker and Cerise for the response
The answer turns out is quite simple. Can't believe I overlooked it. We just need to check scanner's return and err before proceeding

scanResult := stdinScanner.Scan()
scanError := stdinScanner.Err()
if scanResult && scanError == nil {
	if len(stdinScanner.Text()) > 0 {
		fmt.Println("Non empty return not allowed")
		os.Exit(1)
	} else {
		deleteFunc(target)
	}
} else {
	errString := "None"
	if scanError != nil {
		errString = scanError.Error()
	}
	fmt.Printf("Scanner returns %t, err: %s\n", scanResult, errString)
	os.Exit(1)
}