2024年3月26日发(作者：)

1.1 函数名:

STPCPY

功 能: 拷贝一个字符串到另一个

用 法: char *stpcpy(char *destin, char *source);

程序例:

#include

#include

int main(void)

{

char string[10];

char *str1 = "abcdefghi";

stpcpy(string, str1);

printf("%sn", string);

return 0;

}

1.2 函数名:

STRCAT

功 能: 字符串拼接函数

用 法: char *strcat(char *destin, char *source);

程序例:

#include

#include

int main(void)

{

char destination[25];

char *blank = " ", *c = "C++", *Borland = "Borland";

strcpy(destination, Borland);

strcat(destination, blank);

strcat(destination, c);

printf("%sn", destination);

return 0;

}

1.3 函数名:

STRCHR

功 能: 在一个串中查找给定字符的第一个匹配之处

用 法: char *strchr(char *str, char c);

程序例:

#include

#include

int main(void)

{

char string[15];

char *ptr, c = 'r';

strcpy(string, "This is a string");

ptr = strchr(string, c);

if (ptr)

printf("The character %c is at position: %dn", c, ptr-string);

else

printf("The character was not foundn");

return 0;

}

1.4 函数名:

STRCMP

功 能: 串比较

用 法: int strcmp(char *str1, char *str2);

看Asic码，str1>str2，返回值 > 0；两串相等，返回0

程序例:

#include

#include

int main(void)

{

char *buf1 = "aaa", *buf2 = "bbb", *buf3 = "ccc";

int ptr;

ptr = strcmp(buf2, buf1);

if (ptr > 0)

printf("buffer 2 is greater than buffer 1n");

else

printf("buffer 2 is less than buffer 1n");