49 lines
981 B
Go
49 lines
981 B
Go
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// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"fmt"
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"strings"
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)
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func main() {
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speed := 100 // #1
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// speed := 10 // #2
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fast := speed >= 80
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slow := speed < 20
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fmt.Printf("going fast? %t\n", fast)
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fmt.Printf("going slow? %t\n", slow)
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fmt.Printf("is it 100 mph? %t\n", speed == 100)
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fmt.Printf("is it not 100 mph? %t\n", speed != 100)
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fmt.Println(strings.Repeat("-", 25))
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// -------------------------
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// #3
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speedB := 150.5
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faster := speedB > 100 // ok: untyped
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fmt.Println("is the other car going faster?", faster)
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// ERROR: Type Mismatch
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// faster = speedB > speed
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faster = speedB > float64(speed)
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fmt.Println("is the other car going faster?", faster)
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// #4
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// ERROR:
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// only numeric values are comparable with
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// ordering operators: <, <=, >, >=
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// fmt.Println(true > faster)
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}
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