GO? ??? ??? ??? ?????? (? : FMT.Printf, Fmt.Sprintf)

GO? fmt ???? ?? fmt.Printf ? fmt.Sprintf ? ?? ??? ?? ??? ??? ?? ?? ??? ?????. ? ??? ?? ???? ???? ??? ??? ??? ????? ??? ?????.

• fmt.printf :? ??? ?? ? ???? ?? ??? ???. ????? ?? ??? ?????.
• fmt.sprintf :? ??? ??? ???? ??? ???? ?? ???? ??? ?? ????? ??? ? ????.

? ?? ?? ?? ???? ????, ?? ??? ??? ??? ???? ??? ? ?? ?? ????. ?? ??, %s ???? ?????. ??? ?? %d , ?? ??? ?? ?? %f ?????.

??? fmt.Printf ? fmt.Sprintf ???? ??? ?? ??? ????.

 <code class="go">package main import "fmt" func main() { name := "Alice" age := 30 // Using fmt.Printf to print directly to console fmt.Printf("My name is %s and I am %d years old.\n", name, age) // Using fmt.Sprintf to return a formatted string formattedString := fmt.Sprintf("My name is %s and I am %d years old.", name, age) fmt.Println(formattedString) }</code>

GO?? Fmt.printf? Fmt.sprintf? ???? ??????

GO?? fmt.Printf ? fmt.Sprintf ? ?? ???? ??? ????.

• ?? ?? : fmt.Printf ?? ? ???? ?? ?? (??)? ?? ???. ?? fmt.Sprintf ??? ????? ??? ??? ??? string ??? ??? ???? ?????.
• ?? ???? : fmt.Printf ? ????? ??? ?? ?? ? ? ????? ??? ?? ??? ?? ????? ?????. ?????, fmt.Sprintf ??? ? ???? ???? ?? ??? ??? ????? ???? ? ? ?????.
• ?? ? : fmt.Printf ?? ???? ????. ??? ???? ??? ? ?????. ??? fmt.Sprintf ??? ?? ? ??? ??? ???? ?????.

GO? FMT ???? ???? ???? ?? ???? ?? ?? ? ? ?????

GO? fmt ???? ??? ?? ???? ???? ??? ??? ?? ? ?? ??? ?????. ??? ? ?? ???? ?? ??????.

• %s : ??? ??.

   <code class="go">name := "Bob" fmt.Printf("Hello, %s!\n", name)</code>

• %D : ?? ?? ??.

   <code class="go">age := 25 fmt.Printf("Age: %d\n", age)</code>

• %F : ?? ??? ?? ??.

   <code class="go">price := 12.99 fmt.Printf("Price: %.2f\n", price) // Two decimal places</code>

• %V : ? ??? ?? ?????.

   <code class="go">structVal := struct { Name string Age int }{"Charlie", 30} fmt.Printf("Value: %v\n", structVal) // Output: Value: {Charlie 30}</code>

• %t : ?? ??.

   <code class="go">var num int = 42 fmt.Printf("Type: %T\n", num) // Output: Type: int</code>

• %P : ??? ??.

   <code class="go">ptr := &num fmt.Printf("Pointer: %p\n", ptr)</code>

GO? ?? ???? FMT.FPRINTF? ??? ? ??? ??? ??? ? ?????

fmt.Fprintf ? fmt.Printf ? ????? ??? ? ??? ??? ??? ? ????. ? ??? io.Writer ? ?? ??? ?????.? ??? os.File , bytes.Buffer ?? strings.Builder ? ?? Write ???? ???? ?? ?? ? ? ????.

??? ?? ???? ?? fmt.Fprintf ???? ??? ???? ????.

 <code class="go">package main import ( "fmt" "os" "bytes" "strings" ) func main() { // Writing to stdout fmt.Fprintf(os.Stdout, "Hello, stdout!\n") // Writing to a file file, err := os.Create("output.txt") if err != nil { panic(err) } defer file.Close() fmt.Fprintf(file, "Hello, file!\n") // Writing to bytes.Buffer var buffer bytes.Buffer fmt.Fprintf(&buffer, "Hello, buffer!") fmt.Println("Buffer content:", buffer.String()) // Writing to strings.Builder var builder strings.Builder fmt.Fprintf(&builder, "Hello, builder!") fmt.Println("Builder content:", builder.String()) }</code>

? ??? fmt.Fprintf ?? ??, ??, bytes.Buffer ? strings.Builder ? ?? ? ??? ???? ? ?????. ? ??? fmt.Fprintf GO? ?? ???? ?? ? ??? ???? ? ??? ???? ????? ?????.

? ??? GO? ??? ??? ??? ?????? (? : Fmt.printf, Fmt.sprintf)? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!