diff --git a/README.md b/README.md
index 5c7ef03..f05c78f 100644
--- a/README.md
+++ b/README.md
@@ -572,7 +572,7 @@ int main(void)
     int n = 0,m = 0;
     STU stu[STU_NUM];
     printf("Input student number(n<%d):",STU_NUM);
-    scnaf("%d",&n);
+    scanf("%d",&n);
     printf("Input course number(m<=%d):",COURSE_NUM);
     scanf("%d",&m);
     while(1)
@@ -615,7 +615,7 @@ int main(void)
             case 13:ReadfromFile(stu,&n,&m);
                     break;
             case 0: printf("Are you sure you want to exit?(Y/N):");
-                    printf("End of program!);
+                    printf("End of program!");
                     exit(0);
             default:printf("Input error!");
         }
@@ -656,7 +656,7 @@ void ReadScore(STU stu[],int n,int m)
 {
      int i,j;
      printf("Input student's ID ,name and score:\n");
-     for(i=0,i<n;i++)     //输入n个同学
+     for(i=0;i<n;i++)     //输入n个同学
      {
         scanf("%ld%s",&stu[i].num,stu[i].name);
         for(j=0;j<m;j++)       //输入m门成绩
@@ -705,7 +705,7 @@ void AverSumofEveryCourse(STU stu[],int n,int m)
 
 //函数功能：按选择法将数组 sum 的元素值排序
 ```
-voidSortbyScore(STU stu[],int n,int m,int(*compare)(float a,float b))
+void SortbyScore(STU stu[],int n,int m,int(*compare)(float a,float b))
 {
 	int  i, j, k, t;
 	for (i=0; i<n-1; i++)
@@ -770,7 +770,7 @@ void SwapLong(long *x,long *y)
 
 //交换两个字符串
 ```
-void SwapChar(char x[],chary[])
+void SwapChar(char x[],char y[])
 {
         char temp[MAX_LEN];
         strcpy(temp, x);
@@ -875,7 +875,7 @@ void SearchbyName(STU stu[],int n,int m)
                 return;
         }
     }
-    printf("\nNot found!\n);
+    printf("\nNot found!\n");
 }
 ```
 
@@ -975,6 +975,4 @@ void ReadfromFile(STU stu[],int *n,int *m)
 	}
 	fclose(fp);	
 }
-```
-
-[def]: AsScortNum.svg
\ No newline at end of file
+```
\ No newline at end of file