# Golang : Test a slice of integers for odd and even numbers

Tags :

Got this question from one of my students and he is from a disadvantaged background(he is a refugee). He wanted to know how to accept a line of integers and test each of the numbers to see if they are odd or even. Below is a simple program that can do just that.

NOTE: Sometimes things that we take for granted can be so exciting and fascinating for those that don't have this "luxury" in their life. Luxury such as able to touch a computer, go online and learn to program in a safe environment.

`````` package main

import (
"bufio"
"fmt"
"os"
"strconv"
"strings"
)

func main() {

fmt.Print("Enter a number to test if odd or even : ")
//fmt.Scanf("%d", &num)

// the input can be multiple integers with spaces in between
// turn to slice

numSlice := strings.Fields(num)

for _, v := range numSlice {
i, _ := strconv.Atoi(v)
if i%2 == 0 {
fmt.Println(v, "is Even")
} else {
fmt.Println(v, "is Odd")
}
}
}
``````

Sample input and output:

\$ go run oddeven.go

Enter a number to test if odd or even : 1 2 3 4 5 6 7 8 9

1 is Odd

2 is Even

3 is Odd

4 is Even

5 is Odd

6 is Even

7 is Odd

8 is Even

9 is Odd

\$ go run oddeven.go

Enter a number to test if odd or even : 99 98 97 96 55 33 1

99 is Odd

98 is Even

97 is Odd

96 is Even

55 is Odd

33 is Odd

1 is Odd

May you learn enough from me to have a better life :-)

#### See also : Golang : Number guessing game with user input verification example

Tags :

##### By Adam Ng

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