c++ strchr函数_strchr函数返回_模拟实现strchr函数(9)

printf("destinationaftermemcpy:%s\n",dest);

return 0;

}

输出结果：destinationbefore memcpy:abcdefghijlkmnopqrstuvwxyz0123as6

destination after memcpy: ******************************as6

extern void *memchr(const void *buf, intch, size_t count);

从buf所指内存区域的前count个字节查找字符ch。

#include<iostream>

#include<cstring>

using namespace std;

int main()

{

char*s="GoldenGlobalView";

cout<<strlen(s)<<endl;

return 0;

}

输出结果：16

#include<iostream>

#include<cstring>

using namespace std;

int main()

{

char s[]="WelcomeToBeijing";

cout<<strrev(s)<<endl;

return 0;

}

输出结果：nijieBoTemocleW

#include<iostream>

#include<cstring>

using namespace std;

int main()

{

char s1[]="abcdef";

char *s2=strupr(s1);

cout<<s2<<endl;

return 0;

}

输出结果：ABCDEF

#include<iostream>

#include<cstring>

using namespace std;

int main()

{

char s1[]="ABCDEF";

char *s2=strlwr(s1);

cout<<s2<<endl;

return 0;

}

输出结果：abcdef

#include<stdio.h>

#include<string.h>

int main()

{

char*s="GoldenGlobalView";

char*l="lob";

char*p;

p=strstr(s,l);

if(p)

printf("%s",p);

else

printf("NotFound!");

return 0;

}

输出结果：lobalView

extern char *strcat(char *dest,char*src);

把src所指字符串添加到dest结尾处(覆盖dest结尾处的'\0')并添加'\0'。

#include<iostream>

#include<cstring>

using namespace std;

int main()

{

char d[20]="GoldenGlobal";

char s[20]="View";

strcat(d,s);

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