diff --git a/2207/C语言同步练习源码/3.数组-4.c b/2207/C语言同步练习源码/3.数组-4.c
new file mode 100644
index 0000000..e22963b
--- /dev/null
+++ b/2207/C语言同步练习源码/3.数组-4.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+
+int main(){
+	int num[10], i;
+	srand((unsigned)time(NULL));
+	
+	for(i=0;i<10;i++){
+		num[i] = rand()%101;
+		printf("%d ", num[i]);
+	}
+	printf("\n");
+
+	return 0;
+}
+
diff --git a/2207/C语言同步练习答案.md b/2207/C语言同步练习答案.md
index 4bf452e..9f4eb65 100644
--- a/2207/C语言同步练习答案.md
+++ b/2207/C语言同步练习答案.md
@@ -540,13 +540,29 @@ int main(){
 }
 ```
 
-
-
 ### 数组-4
 
 ![image-20250220231447834](https://yp.smallkun.cn/markdown/image-20250220231447834.png!compress)
 
+```c
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
 
+int main(){
+	int num[10], i;
+	srand((unsigned)time(NULL));
+	
+	for(i=0;i<10;i++){
+		num[i] = rand()%101;
+		printf("%d ", num[i]);
+	}
+	printf("\n");
+
+	return 0;
+}
+
+```
 
 ### 数组-5