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78 lines
1.4 KiB
78 lines
1.4 KiB
6 years ago
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# atoi
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## Instructions
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- Write a [function](TODO-LINK) that simulates the behaviour of the `Atoi` function in Go. `Atoi` transforms a number represented as a `string` in a number represented as an `int`.
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- Atoi returns `0` if the `string` is not considered as a valid number. For this exercise **non-valid `string` chains will be tested**. Some will contain non-digits characters.
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- For this exercise the handling of the signs + or - **does have** to be taken into account.
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- This function will **only** have to return the `int` `nbr`. For this exercise the `error` return of atoi is not required.
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## Format required
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```go
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func Atoi(s string) int {
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}
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```
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## Usage
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Here is a possible [program](TODO-LINK) to test your function :
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```go
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package main
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import (
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"fmt"
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piscine ".."
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)
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func main() {
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s := "12345"
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s2 := "0000000012345"
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s3 := "012 345"
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s4 := "Hello World!"
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s5 := "+1234"
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s6 := "-1234"
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s7 := "++1234"
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s8 := "--1234"
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n := piscine.Atoi(s)
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n2 := piscine.Atoi(s2)
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n3 := piscine.Atoi(s3)
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n4 := piscine.Atoi(s4)
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n5 := piscine.Atoi(s5)
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n6 := piscine.Atoi(s6)
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n7 := piscine.Atoi(s7)
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n8 := piscine.Atoi(s8)
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fmt.Println(n)
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fmt.Println(n2)
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fmt.Println(n3)
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fmt.Println(n4)
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fmt.Println(n5)
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fmt.Println(n6)
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fmt.Println(n7)
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fmt.Println(n8)
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}
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```
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And its output :
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```console
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student@ubuntu:~/piscine/test$ go build
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student@ubuntu:~/piscine/test$ ./test
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12345
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12345
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0
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0
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1234
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-1234
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0
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0
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student@ubuntu:~/piscine/test$
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```
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