diff --git a/L.文件管理系统 b/L.文件管理系统
new file mode 100644
index 0000000..213cd3b
--- /dev/null
+++ b/L.文件管理系统
@@ -0,0 +1,10 @@
+36.void AsSortbyNum(STU stu[], int n, int m)
+37.{
+38.    int  i, j, k, t;
+39.    for (i=0; i<n-1; i++)
+40.    {
+41.        k = i;
+42.        for (j=i+1; j<n; j++)
+43.        {
+44.            if (stu[j].num < stu[k].num)    k = j;
+45.        }
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