diff --git a/README.md b/README.md
index bb1afe6..8a29bd7 100644
--- a/README.md
+++ b/README.md
@@ -657,7 +657,7 @@ function ReadScore(STU stu[],int n,int m) do
      int i,j;
      printf "Input student's ID ,name and score:\n"
      for from i=0 to n-1 do     //输入n个同学
-     
+
         input stu[i].num,stu[i].name 
         for form j=0 to m-1 do      //输入m门成绩
         input stu[i].score[j]
@@ -669,312 +669,264 @@ end
 
 //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)
-{
+function AverSumofEveryStudent(STU stu[],int n,int m) do
    int i,j;
-   for(i=0;i<n;i++)
-   {
+   for form i=0 to n-1 do 
         stu[i].sum = 0;   //初始化每个学生总分为0
-        for(j=0;j<m;j++)
-        {
+        for from j=0 to m-1 do
                 stu[i].sum = stu[i].sum + stu[i].score[j];    //累加分数
-        }
+        end
         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);
-   }
-}
+        printf "student %d: sum = %.0f,aver = %.0f\n"
+   end
+end
 ```
 
 //函数功能：计算每门课程的总分和平均分
 ```
-void AverSumofEveryCourse(STU stu[],int n,int m)
-{
+function AverSumofEveryCourse(STU stu[],int n,int m) do
     int i,j;
     float sum[COURSE_NUM],aver[COURSE_NUM];
-    for(j=0;j<m;j++)
-    {
+    for from j=0 to m-1 do
         sum[j] = 0;
-        for(i=0;i<n;i++)
-        {
+        for from i=0 to n-1 do
                 sum[j]+= stu[i].score[j];   //计算n个同学每门课程的总分
-
-        }
+        end
         aver[j] = sum[j]/i;
-        printf("course %d: sum = %.0f,aver = %.0f\n",j+1, sum[j], aver[j]);
-    }
-}
+        printf "course %d: sum = %.0f,aver = %.0f\n"
+    end
+end
 ```
 
 //函数功能：按选择法将数组 sum 的元素值排序
 ```
-void SortbyScore(STU stu[],int n,int m,int(*compare)(float a,float b))
-{
+function SortbyScore(STU stu[],int n,int m,int(*compare)(float a,float b)) do
 	int  i, j, k, t;
-	for (i=0; i<n-1; i++)
-	{
+	for from i=0 to n-2 do
 		k = i;
-		for (j=i+1; j<n; j++)
-		{
-		if ((*compare)(stu[j].sum, stu[k].sum)) k = j;
-		}
-		if (k != i)
-		{		   
-		   for (t=0; t<m; t++)        //交换m门课程的成绩
-                    {
+		for from i+1 to n-1 do
+		if (*compare)(stu[j].sum, stu[k].sum) set k = j;
+		end
+		if k != i		   
+		   for from t=0 to m-1 do        //交换m门课程的成绩
                       SwapFloat(&stu[k].score[t], &stu[i].score[t]);
-                    }
+                    end
 SwapFloat(&stu[k].sum, &stu[i].sum);    //交换总分 
 SwapFloat(&stu[k].aver, &stu[i].aver);  //交换平均分
 SwapLong(&stu[k].num, &stu[i].num);     //交换学号 
 SwapChar(stu[k].name, stu[i].name);     //交换姓名
-		}
-	}
-}
+		end
+	end
+end
 ```
 
 //使数据按升序排序
 ```
-int Ascending(float a,float b)
-{
+function  Ascending(float a,float b) do
         return a < b;    //这样比较决定了按升序排序，如果a<b，则交换
-}
+end
 ```
 
 //使数据按降序排序
 ```
-int Descending(float a,float b)
-{
+function  Descending(float a,float b) do
         return a > b;    // 这样比较决定了按降序排序，如果 a>b，则交换
-}
+end
 ```
 
 //交换两个单精度浮点型数据
 ```
-void SwapFloat(float *x,float *y)
-{
+function SwapFloat(float *x,float *y) do
         float  temp;
         temp = *x;
         *x = *y;
         *y = temp;
-}
+end
 ```
 
 //交换两个长整型数据
 ```
-void SwapLong(long *x,long *y)
-{
+function SwapLong(long *x,long *y) do
         long temp;
         temp = *x;
         *x = *y;
         *y = temp;
-}
+end
 ```
 
 //交换两个字符串
 ```
-void SwapChar(char x[],char y[])
-{
+function SwapChar(char x[],char y[]) do
         char temp[MAX_LEN];
         strcpy(temp, x);
         strcpy(x, y);
         strcpy(y, temp);
-}
+end
 ```
 
 //函数功能：按选择法将数组 num 的元素从低到高排序
 ```
-void AsSortbyNum(STU stu[],int n,int m)
-{
+function AsSortbyNum(STU stu[],int n,int m) do
      	int  i, j, k, t;
-	for (i=0; i<n-1; i++)
-	{
+	for from i=0 to n-2 do
 			int  i, j, k, t;
-		k = i;
-		for (j=i+1; j<n; j++)
-		{
-		if (stu[j].num < stu[k].num) k = j;
-		}
-		if (k != i)
-		{		   
-		   for (t=0; t<m; t++)        //交换m门课程的成绩
-                    {
+		set k = i;
+		for from j=i+1 to n-1 do
+		if stu[j].num < stu[k].num set k = j;
+		end
+		if k != i do		   
+		   for from t=0 to m-1 do        //交换m门课程的成绩
                       SwapFloat(&stu[k].score[t], &stu[i].score[t]);
-                    }
+                    end
 SwapFloat(&stu[k].sum, &stu[i].sum);    //交换总分 
 SwapFloat(&stu[k].aver, &stu[i].aver);  //交换平均分
 SwapLong(&stu[k].num, &stu[i].num);     //交换学号 
 SwapChar(stu[k].name, stu[i].name);     //交换姓名
-		}
-	}
-}
+		end
+	end
+end
 ```
 
 //函数功能：交换法实现字符串按字典顺序排序
 ```
-void SortbyName(STU stu[],int n,int m)
-{
+function SortbyName(STU stu[],int n,int m) do
 	int  i, j, t;
-	for (i=0; i<n-1; i++)
-	{
-		  for (j = i+1; j<n; j++)
-		  {
-			  if (strcmp(stu[j].name, stu[i].name) < 0)
-			  {				  
-				  for (t=0; t<m; t++)   //交换m门课程的成绩
-                                {
+	for from i=0 to n-2 do
+		  for from j = i+1 to n-1 do
+			  if strcmp(stu[j].name, stu[i].name) < 0 do			  
+				  for from t=0 to m-1 do   //交换m门课程的成绩
 				      SwapFloat(&stu[i].score[t], &stu[j].score[t]);
-			        } 
+			        end
 SwapFloat(&stu[i].sum, &stu[j].sum);    //交换总分 
 SwapFloat(&stu[i].aver, &stu[j].aver);   //交换平均分
 SwapLong(&stu[i].num, &stu[j].num);     //交换学号 
 SwapChar(stu[i].name, stu[j].name);     //交换姓名
-			  }
-		  }
-	 }
-}
+			  end
+		  end
+	 end
+end
 ```
 
 //函数功能：按学号查找学生成绩并显示查找结果
 ```
-void SearchbyNum(STU stu[],int n,int m)
-{
+function SearchbyNum(STU stu[],int n,int m) do
         long number;
         int i,j;
-        printf("Input the number you want to search:");
-        scanf("%ld",&number);
-        for(i=0;i<n;i++)
-          if(stu[i].num==number)
-            {
-                printf("\n");
-                for(j=0;j<m;j++)
-                  printf("%d\t",stu[i].score[j]);
-                printf("\n");
+        printf"Input the number you want to search:"
+        input number
+        forfrom i=0 to n-1 do
+          if stu[i].num==number do
+                printf"\n"
+                for from j=0 to m-1 do
+                  printf "%d\t"
+                printf "\n"
                 break;
-            }
-        if(i==n)
-        printf("\nNot found!\n");
-}
+            end
+        if i==n 
+        printf "\nNot found!\n"
+end
 ```
 
 //函数功能：按姓名查找学生成绩并显示查找结果
 ```
-void SearchbyName(STU stu[],int n,int m)
-{
+function SearchbyName(STU stu[],int n,int m) do
     char x[MAX_LEN];
     int i,j;
-    printf("Input the name you want to search:");
-    scanf("%s", x);
-    for(i=0;i<n;i++)
-    {
-        if(strcmp(stu[i].name,x)==0)
-        {
-                printf("%ld\t%s\t",stu[i].num,stu[i].name);
-                for(j=0;j<m;j++)
-                {
-                        printf("%.0f\t",stu[i].score[j]);
-                }
-                printf(".0f\t%.0f\n",stu[i].sum,stu[i].aver);
+    printf "Input the name you want to search:"
+    input x
+    for from i=0 to n-1 do
+        if strcmp(stu[i].name,x)==0 do
+                printf "%ld\t%s\t",stu[i].num,stu[i].name"
+                for from j=0 to m-1 do
+                        printf "%.0f\t"
+                end
+                printf ".0f\t%.0f\n"
                 return;
-        }
-    }
-    printf("\nNot found!\n");
-}
+        end
+    end
+    printf "\nNot found!\n"
+end
 ```
 
 //函数功能：统计各分数段的学生人数及所占的百分比
 ```
-void StatisticAnalysis(STU stu[],int n,int m)
-{
+funtion StatisticAnalysis(STU stu[],int n,int m) do
         int i,j,t[6];
-        for(j=0;j<m;j++)
-        {
-                printf("For course %d:\n",j+1);
+        for from j=0 do m-1 do
+                printf "For course %d:\n"
                 memset(t,0,sizeof(t));        //将数组 t 的全部元素初始化为0
-                for(i=0;i<n;i++)
-                {
-                        if(stu[i].score[j]>=0&&stu[i].score[j]<60) t[0]++;
-                        else if(stu[i].score[j]<70)    t[1]++;
-                        else if(stu[i].score[j]<80)    t[2]++;
-                        else if(stu[i].score[j]<90)    t[3]++;
-                        else if(stu[i].score[j]<100)   t[4]++;
-                        else if(stu[i].score[j]==100)  t[5]++;
-                }
-                for(i=0;i<=5;i++)
-                {
-                        if(i==0) printf("<60\t%d\t%.2f%%\n",t[i],(float)t[i]/n*100);
-                        else if(i==5) printf("%d\t%d\t%.2f%%\n",(i+5)*10,t[i],(float)t[i]/n*100);
-                        else printf("%d-%d\t%d\t%.2f%%\n",(i+5)*10,(i+5)*10+9,t[i],(float)t[i]/n*100);
-                }
-        }
-}
+                for from i=0 to n-1 do
+                        if stu[i].score[j]>=0&&stu[i].score[j]<60 set t[0]++
+                        else if stu[i].score[j]<70   set t[1]++;
+                        else if stu[i].score[j]<80   set t[2]++;
+                        else if stu[i].score[j]<90   set t[3]++;
+                        else if stu[i].score[j]<100  set t[4]++;
+                        else if stu[i].score[j]==100 set t[5]++;
+                end
+                for from i=0 to 4 do
+                        if i==0 printf "<60\t%d\t%.2f%%\n"
+                        else if i==5 printf "%d\t%d\t%.2f%%\n"
+                        else printf "%d-%d\t%d\t%.2f%%\n"
+                end
+        end
+end
 
 ```
 
 //函数功能：打印学生成绩
 ```
-void PrintScore(STU stu[],int n,int m)
-{
+function PrintScore(STU stu[],int n,int m) do
         int i,j;
-        for (i=0; i<n; i++)
-        {
-                printf("%ld\t%s\t", stu[i].num, stu[i].name);
-                for (j=0; j<m; j++)
-                {
-                        printf("%.0f\t", stu[i].score[j]);
-                }
-                printf("%.0f\t%.0f\n", stu[i].sum, stu[i].aver);
-        }
-}
+        for from i=0 to n-1 do
+                printf "%ld\t%s\t"
+                for from j=0 to m-1 do
+                        printf "%.0f\t"
+                end
+                printf "%.0f\t%.0f\n"
+        end
+end
 ```
 
 //输出 n 个学生的学号、姓名及 m 门课程的成绩到文件 student.txt 中
 ```
-void WritetoFile(STU stu[],int n,int m)
-{
+function WritetoFile(STU stu[],int n,int m) do
         FILE *fp;
         int i, j;
 
-        if((fp = fopen("student.txt","w")) == NULL)
-        {
-                printf("Failure to open score.txt!\n");
+        if fp = fopen("student.txt","w") == NULL do
+                printf "Failure to open score.txt!\n"
                 exit(0);
-        }
+        end
         fprintf(fp, "%d\t%d\n", n, m);    //将学生人数和课程门数写入文件
-        for (i=0; i<n; i++)
-        {
+        for from i=0 to n-1 do
                 fprintf(fp, "%10ld%10s", stu[i].num, stu[i].name);
-                for (j=0; j<m; j++)
-                {
+                for from j=0 to m-1 do
                         fprintf(fp, "%10.0f", stu[i].score[j]);
-                }
+                end
                 fprintf(fp, "%10.0f%10.0f\n", stu[i].sum, stu[i].aver);
-        }
+        end
         fclose(fp);
-}
+end
 ```
 
 //从文件中读取学生的学号、姓名及成绩等信息写入到结构体 stu 中
 ```
-void ReadfromFile(STU stu[],int *n,int *m)
-{
+function ReadfromFile(STU stu[],int *n,int *m) do
     	FILE *fp;
 	int i, j;
-	if ((fp = fopen("student.txt","r")) == NULL) 
-	{ 
-		printf("Failure to open score.txt!\n");
+	if fp = fopen("student.txt","r") == NULL do
+		printf "Failure to open score.txt!\n"
 		exit(0);
-	}
+	end
         fscanf(fp, "%d\t%d", n, m); //从文件中读出学生人数，课程门数    
-	for (i=0; i<*n; i++)  //学生人数保存在n指向的储存单元
-	{
+	for from i=0 to *n-1 do //学生人数保存在n指向的储存单元
 		fscanf(fp, "%10ld", &stu[i].num);
 		fscanf(fp, "%10s", stu[i].name);  
-		for (j=0; j<*m; j++) //课程门数保存在m指向的储存单元
-		{
+		for  form j=0 to *m-1 do //课程门数保存在m指向的储存单元
 			fscanf(fp, "%10f", &stu[i].score[j]);          //不能用%10.0f
-		}
+		end
 		fscanf(fp, "%10f%10f", &stu[i].sum, &stu[i].aver);  //不能用%10.0f
-	}
+	end
 	fclose(fp);	
-}
+end
 ```
\ No newline at end of file