diff --git a/README.md b/README.md
index 74fc807..490cf56 100644
--- a/README.md
+++ b/README.md
@@ -205,7 +205,21 @@ void AverSumofEveryStudent(STU stu[],int n,int m)
 ```
 void AverSumofEveryCourse(STU stu[],int n,int m)
 {
+    int i,j;
+    float sum[COURSE_NUM],aver[COURSE_NUM];
+    /*--------------begin------------*/
+    for(j=0;j<m;j++)
+    {
+        sum[j] = 0;
+        for(i=0;i<n;i++)
+        {
+                sum[j]+= stu[i].score[j];   //计算n个同学每门课程的总分
 
+        }
+        aver[j] = sum[j]/i;
+        printf("student %d: sum = %.0f,aver = %.0f\n",j+1, sum[j], aver[j]);
+    }
+    /*--------------------end------------------------*/
 }
 ```