diff --git a/最后一舞/C语言基础进阶合集版编程题.md b/最后一舞/C语言基础进阶合集版编程题.md
index 78b555b..3805f99 100644
--- a/最后一舞/C语言基础进阶合集版编程题.md
+++ b/最后一舞/C语言基础进阶合集版编程题.md
@@ -566,6 +566,35 @@ programming
 输出样例：index=7
 ```
 
+```c
+#include <stdio.h>
+
+int main(){
+	char target, *p; 
+	char str[100];
+	
+	char *index = NULL;
+	p = str;
+	scanf("%c", &target);
+	scanf("%s", str);
+	while(*p != '\0'){
+		if(*p == target){
+			index = p;
+		}
+		p++;
+	}
+	if(index != NULL){
+		printf("index=%d\n", index-str);
+	}else{
+		printf("Not Found\n");
+	}
+
+
+	return 0;
+}
+
+```
+
 
 
 ### 12 大小写转换
@@ -586,6 +615,37 @@ $%*& dC
 32!Ba
 ```
 
+```c
+#include <stdio.h>
+
+int main(){
+	char ch;
+	char str[100];
+	char *p = str;
+	
+	while((ch=getchar())!= '#'){
+		if(ch >= 'a' && ch <= 'z'){
+			*p = ch-32;
+		}else if(ch >= 'A' && ch <= 'Z'){
+			*p = ch+32;
+		}else{
+			*p = ch;
+		}
+		p++;
+	}
+	while(p!= str){
+		p--;
+		putchar(*p);
+	}
+	printf("\n");
+
+
+
+	return 0;
+}
+
+```
+
 
 
 ### 13 字符串比较
@@ -602,6 +662,47 @@ love
 输出样例：0
 ```
 
+```c
+#include <stdio.h>
+
+int main(){
+	char str1[100], str2[100];
+	char *p, *q, flag;
+	
+	p = str1;
+	q = str2;
+	gets(str1);
+	gets(str2);
+
+	while(*p != '\0' && *q != '\0'){
+		if(*p > *q){
+			flag = 1;
+			break;
+		}else if(*p < *q){
+			flag = -1;
+			break;
+		}
+		p++;
+		q++;
+	}
+	if(*p == '\0' && *q == '\0'){
+		flag = 0;
+	}
+	if(*p != '\0' && *q == '\0'){
+		flag = 1;
+	}
+	if(*p == '\0' && *q != '\0'){
+		flag = -1;
+	}
+	printf("%d\n", flag);
+	
+
+
+	return 0;
+}
+
+```
+
 
 
 ### 14 字符串排序
@@ -623,6 +724,42 @@ abc
 b
 ```
 
+```c
+#include <stdio.h>
+#include <string.h>
+
+int main(){
+	int n, i, j;
+	scanf("%d", &n); 
+
+	char str[n][80];
+	char temp[80];
+	
+	for(i=0;i<n;i++){
+		scanf("%s", *(str+i));
+	}
+	
+	for(i=0;i<n-1;i++){
+		for(j=0;j<n-1-i;j++){
+			if(strcmp(*(str+j), *(str+j+1)) == 1){
+				strcpy(temp, *(str+j));
+				strcpy(*(str+j), *(str+j+1));
+				strcpy(*(str+j+1), temp);
+			}
+		}
+	}
+	for(i=0;i<n;i++){
+		printf("%s\n", *(str+i));
+	}
+	
+
+
+
+	return 0;
+}
+
+```
+
 
 
 ### 15 字符串插入
@@ -640,6 +777,39 @@ ee
 输出样例：aeebc
 ```
 
+```c
+#include <stdio.h>
+#include <string.h>
+
+int main(){
+	char str1[100], str2[100];
+	int n, i;
+	char *p, *q;
+	scanf("%s %s", str1, str2);
+	scanf("%d", &n);
+	
+	for(i=0;i<strlen(str2);i++){
+		p = str1+strlen(str1);
+		while(p>=str1+n+i-1){
+			*(p+1) = *p;
+			p--;
+		}
+	}
+	p = str1+n-1;
+	q = str2; 
+	while(*q != '\0'){
+		*p = *q;
+		p++;
+		q++;
+	}
+	
+	printf("%s\n%s", str1, str2);
+
+	return 0;
+}
+
+```
+
 
 
 ### 16 字符串删除
@@ -656,6 +826,50 @@ dee
 输出样例：abcdf
 ```
 
+```c
+#include <stdio.h>
+#include <string.h>
+int main(){
+	char str1[100], str2[100];
+	int n;
+	char *p, *q;
+	scanf("%s", str1);
+	scanf("%s", str2);
+	p = str1;
+	while(*p != '\0'){
+		q = str2;
+		while(*q == *p && *q != '\0'){
+			p++;
+			q++;
+		}
+		if(*q == '\0'){
+			q = p;
+			while(*q != '\0'){
+				*(q-strlen(str2)) = *q;
+				q++;
+			}
+			*(q-strlen(str2))='\0';
+			p-=strlen(str2);
+		}
+		if(*p == *str2){
+			p--;
+		}
+		p++;
+	}
+	
+	
+	printf("%s\n", str1);
+	
+
+
+
+	return 0;
+}
+
+```
+
+
+
 ---
 
 ## 进制转换