crypto/rand: add example for Int

Change-Id: I401e6092b1cbbd332406ffa7f923c46de0a3ff49 GitHub-Last-Rev: ef20578 GitHub-Pull-Request: #71773 Reviewed-on: https://go-review.googlesource.com/c/go/+/650035 Auto-Submit: Dmitri Shuralyov <[email protected]> Reviewed-by: Dmitri Shuralyov <[email protected]> Reviewed-by: Dmitri Shuralyov <[email protected]> LUCI-TryBot-Result: Go LUCI <[email protected]> Reviewed-by: Michael Knyszek <[email protected]>
golang · Feb 21, 2025 · d7a1261 · d7a1261
1 parent f24b299
commit d7a1261
Showing 1 changed file with 15 additions and 1 deletion.
diff --git a/src/crypto/rand/example_test.go b/src/crypto/rand/example_test.go
@@ -4,7 +4,21 @@
 
 package rand_test
 
-import "crypto/rand"
+import (
+	"crypto/rand"
+	"fmt"
+	"math/big"
+)
+
+// ExampleInt prints a single cryptographically secure pseudorandom number between 0 and 99 inclusive.
+func ExampleInt() {
+	a, err := rand.Int(rand.Reader, big.NewInt(100))
+	if err != nil {
+		fmt.Println("error:", err)
+		return
+	}
+	fmt.Println(a.Int64())
+}
 
 func ExampleRead() {
 	// Note that no error handling is necessary, as Read always succeeds.