gemini repo day1

.gitignore

@@ -0,0 +1,3 @@
+*.swp
+go.mod
+go.sum

terminal_width.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"golang.org/x/term"
+)
+
+func main() {
+	// Check if the program is running in a terminal.
+	// If not, width and height will be meaningless.
+	if !term.IsTerminal(int(os.Stdout.Fd())) {
+		fmt.Println("Not running in a terminal.")
+		return
+	}
+
+	// term.GetSize(int(os.Stdout.Fd())) gets the dimensions of the given terminal.
+	// os.Stdout.Fd() returns the file descriptor for standard output.
+	width, height, err := term.GetSize(int(os.Stdout.Fd()))
+	if err != nil {
+		log.Fatalf("failed to get terminal size: %v", err)
+	}
+
+	fmt.Printf("Terminal size:\n")
+	fmt.Printf("Width: %d\n", width)
+	fmt.Printf("Height: %d\n", height)
+
+	fmt.Println("\nPrinting a long line to demonstrate wrapping:")
+	for i := 0; i < width*2; i++ {
+		fmt.Print("#")
+	}
+	fmt.Println()
+}