public/subjects/strisnegative

isnegative

Write a function named IsNegative() that defines if a number (You should check if it's a number) is negative or positive.

• Your function print P if the number is positive
• Your function print F if the number is negative
• For the number is zero print 0.
• If it's not a number print newline.
• Your program should always print ('\n') at the end of the output.

Expected function

func StrisNegative(str string) {

}

Usage

Here is a possible program to test your function :

package main

func main() {
	StrisNegative("585")
	StrisNegative("-58")
	StrisNegative("55s44")
	StrisNegative("101-1331")
	StrisNegative("5544-")
}

And its output :

$ go run .
P
N
!
!
!