#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<math.h>
#include<time.h>
//使用系统函数strchr在字符串中查找字符
int main0101()
{
char ch[]="hello world";
char c='l';
char*p=strchr(ch,c);
printf("%s ",p);//llo world
return EXIT_SUCCESS;
}
//自定义函数在字符串中查找字符
char*my_strchr(const char*ch,int c)
{
while(*ch)
{
if(*ch==c)
{
return ch;
}
ch++;
}
return NULL;
}
int main0102(void)
{
char ch[]="hello world";
char c='1';
char*p=my_strchr(ch,c)
printf("%s ",p);//llo world
}
//使用系统函数strstr在字符串中查找字符串
int main(void)
{
char ch[]="hello world";
char str[]="llo";
char*p=strstr(ch,str);
printf("%s ",p);//llo world
return 0;
}