main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
)
func main() {
width, height := 5., 12.
// calculates the area of a rectangle
area := width * height
fmt.Printf("%gx%g=%g\n", width, height, area)
area = area - 10 // decreases area by 10
area = area + 10 // increases area by 10
area = area * 2 // doubles the area
area = area / 2 // divides the area by 2
fmt.Printf("area=%g\n", area)
// // ASSIGNMENT OPERATIONS
area -= 10 // decreases area by 10
area += 10 // increases area by 10
area *= 2 // doubles the area
area /= 2 // divides the area by 2
fmt.Printf("area=%g\n", area)
// finds the remainder of area variable
// since: area is float, this won't work:
// area %= 7
// this works
area = float64(int(area) % 7)
fmt.Printf("area=%g\n", area)
}
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