diff --git a/Digital_clock.c b/Digital_clock.c
new file mode 100644
index 0000000..b463548
--- /dev/null
+++ b/Digital_clock.c
@@ -0,0 +1,38 @@
+#include<stdio.h>
+#include<windows.h>
+
+int main()
+{
+    int h,m,s;
+    
+    printf("set time: \n");
+    scanf("%d%d%d",&h,&m,&s);
+    if(h>12||m>60||s>60)
+    {
+        printf("error! \n");
+    }
+    while(1)
+    {
+        s++;
+        if(s>59)
+        {
+            m++;
+            s=0;
+        }
+        if(m>59)
+        {
+            h++;
+            m=0;
+        }
+        if(h>12)
+        {
+            h=1;
+        }
+        printf("Clock :");
+        printf("%02d:%02d:%02d",h,m,s);
+        Sleep(1000);
+        system("cls");
+        
+    }
+    return 0;
+}