字符串学习之-自写strchr 字符串查找字符函数 

 1 // mystrchr.cpp : Defines the entry point for the console application.
 2 //
 3 
 4 #include "stdafx.h"
 5 #include "stdio.h"
 6 #include "stdlib.h"
 7 #include "string.h"
 8 
 9  
10 
11 char *MyStrChr(char *pstr,char ch)
12 {
13 
14 if (pstr==NULL)
15 {
16 return NULL;
17 } 
18 else
19 {
20 while(*pstr!='\0')
21 {
22 if(*pstr==ch)
23 {
24 return pstr;
25 }
26 pstr++;
27 
28 }
29 
30 }
31 return NULL;
32 }
33 
34  
35 
36  
37 
38 int main(int argc, char* argv[])
39 {
40 char str1[20]="mynameisxxxxxxxxxxxxxxxx";
41 char ch='f';
42 char *pstr1=MyStrChr(str1,ch);
43 if (pstr1==NULL)
44 {
45 printf("没有找到\n");
46 
47 } 
48 else
49 {
50 printf("ch=%c,str1=%s\n,dizhi=%x\n",*pstr1,pstr1,pstr1);
51 }
52 
53  
54 
55 system("pause");
56 return 0;
57 }

 

posted @ 2021-08-24 15:13  admrty  阅读(114)  评论(0)    收藏  举报