learning about golang for loop

src/01-hello.go

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+package main
+
+import "fmt"
+
+func main() {
+  fmt.Println("Hello World")
+}

src/02-values.go

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+package main
+
+import "fmt"
+
+func main() {
+  fmt.Println("concat" + " " + "strings")
+  fmt.Println("1 + 1 =", 1 + 1)
+  fmt.Println("7.0 / 3.0 =", 7.0 / 3.0)
+  fmt.Println(true && false)
+}

src/03-variables.go

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+package main
+
+import "fmt"
+
+func main() {
+  var a = "initial"
+  fmt.Println(a)
+
+  a = "changed"
+  fmt.Println(a)
+
+  var b, c int = 1, 2
+  fmt.Println("b=", b, ", c=", c)
+
+  var d = true
+  fmt.Println(d)
+
+  var e int
+  fmt.Println(e)
+
+  f := "short"
+  fmt.Println(f)
+
+  f = "changed short"
+  fmt.Println(f)
+}

src/04-constants.go

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+package main
+
+import (
+  "fmt"
+  "math"
+)
+
+const s string = "this is a constant"
+
+func main() {
+  fmt.Println(s)
+
+  const n = 500000000
+  const d = 3e20 / n
+
+  fmt.Println(d)
+  fmt.Println(int64(d))
+  fmt.Println(math.Sin(n))
+}

src/05-for.go

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+package main
+
+import "fmt"
+
+func main() {
+  i := 1
+  for i <= 3 {
+    fmt.Println("number i =", i)
+    i = i + 1
+  }
+
+  for j := 0; j < 3; j++ {
+    fmt.Println("number j =", j)
+  }
+
+  for {
+    fmt.Println("loop with no condition")
+    break
+  }
+
+  for n := range 6 {
+    if n%2 == 0 {
+      fmt.Println("even number n = ", n)
+      continue
+    }
+    fmt.Println("odd number n = ", n)
+  }
+}