golang for done

golang/tuckers_go/08_for/for_02/for-02.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+func main() {
+	stdin := bufio.NewReader(os.Stdin)
+	for {
+		fmt.Println("입력하세요.")
+		var number int
+		_, err := fmt.Scanln(&number)
+		if err != nil {
+			fmt.Println("숫자를 입력하세요.")
+
+			stdin.ReadString('\n')
+			continue
+		}
+		fmt.Printf("입력하신 숫자는 %d 입니다.\n", number)
+		if number%2 == 0 {
+			break
+		}
+	}
+	fmt.Println("for문이 종료됐습니다.")
+}

golang/tuckers_go/08_for/for_03/for-03.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+	for i := 0; i < 3; i++ {
+		for j := 0; j < 5; j++ {
+			fmt.Print("*")
+		}
+		fmt.Println()
+	}
+}

golang/tuckers_go/08_for/for_04/for-04.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+	for i := 0; i < 5; i++ {
+		for j := 0; j < i+1; j++ {
+			fmt.Print("*")
+		}
+		fmt.Println()
+	}
+}

golang/tuckers_go/08_for/for_05/for-05.go

@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+
+func main() {
+	dan := 2
+	b := 1
+	for {
+		for {
+			fmt.Printf("%d * %d = %d\n", dan, b, dan*b)
+			b++
+			if b == 10 {
+				break
+			}
+		}
+		b = 1
+		dan++
+		if dan == 10 {
+			break
+		}
+	}
+	fmt.Println("for문이 종료되었습니다.")
+}

golang/tuckers_go/08_for/for_06/for-06.go

@@ -0,0 +1,21 @@
+package main
+
+import "fmt"
+
+func main() {
+	a := 1
+	b := 1
+	found := false
+	for ; a <= 9; a++ {
+		for b = 1; b <= 9; b++ {
+			if a*b == 45 {
+				found = true
+				break
+			}
+		}
+		if found {
+			break
+		}
+	}
+	fmt.Printf("%d * %d = %d\n", a, b, a*b)
+}

golang/tuckers_go/08_for/for_07/for-07.go

@@ -0,0 +1,18 @@
+package main
+
+import "fmt"
+
+func main() {
+	a := 1
+	b := 1
+
+OuterFor:
+	for ; a <= 9; a++ {
+		for b = 1; b <= 9; b++ {
+			if a*b == 45 {
+				break OuterFor
+			}
+		}
+	}
+	fmt.Printf("%d * %d = %d\n", a, b, a*b)
+}

golang/tuckers_go/08_for/for_08/for-08.go

@@ -0,0 +1,25 @@
+package main
+
+import "fmt"
+
+func find45(a int) (int, bool) {
+	for b := 1; b <= 9; b++ {
+		if a*b == 45 {
+			return b, true
+		}
+	}
+	return 0, false
+}
+
+func main() {
+	a := 1
+	b := 0
+
+	for ; a <= 9; a++ {
+		var found bool
+		if b, found = find45(a); found {
+			break
+		}
+	}
+	fmt.Printf("%d  * %d = %d\n", a, b, a*b)
+}