diff --git a/README.md b/README.md
index 57d9e57..27a0a30 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+~~~c
 #include<stdio.h>
 #define max(x,y)((x)>(y)?(x):(y))
 #define MAXN 20  //最多物品数
@@ -43,7 +44,9 @@ int main() {
     printf("\n");
     printf("总价值=%d", maxv);
 }
-***
+~~~
+  
+~~~c
 #include<stdio.h>
 int fib(int n){
 	if(n<=2){
@@ -62,7 +65,9 @@ int main(){
 	} 
 	return 0;
 }
-***
+~~~
+  
+~~~c
 #include<stdio.h>
 typedef struct{
 	int number;
@@ -101,7 +106,9 @@ int main(){
 	printf("众数为：%d,重数为：%d",result.number,result.count);
 	return 0;
 }
-***
+~~~
+  
+~~~c
 #include<stdio.h>
 #include<stdlib.h>
 #define max(a,b)((a)>(b)?(a):(b))
@@ -148,4 +155,5 @@ int main(){
 	free(root->right);
 	free(root);
 	return 0; 
-}
\ No newline at end of file
+}
+~~~
\ No newline at end of file