diff --git a/c2函数功能 b/c2函数功能
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+++ b/c2函数功能
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+//2 函数功能：计算每个学生各门课程的总分和平均分 
+void AverSumofEveryStudent(STU stu[], int n, int m)
+{
+    int i, j;
+    for (i=0; i<n; i++)
+    {
+        stu[i].sum = 0;
+        for (j=0; j<m; j++)
+        {
+            stu[i].sum = stu[i].sum + stu[i].score[j];
+        }
+        stu[i].aver = m>0 ? stu[i].sum / m : -1;
+        printf("student %d: sum = %.0f, aver = %.0f\n", 
+i+1, stu[i].sum, stu[i].aver);
+    }    
+}
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