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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 string10; char *str1 = abcdefghi; stpcpy(string, str1); printf(%sn, string); return 0; 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
2、 int main(void) char destination25; char *blank = , *c = C+, *Borland = Borland; strcpy(destination, Borland); strcat(destination, blank); strcat(destination, c); printf(%sn, destination); return 0; 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
3、 main(void) char string15; 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; 函数名: strcmp 功 能: 串比较 用 法: int strcmp(char *str1, char *str2); 看Asic码，str1
4、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); ptr = strcmp(buf2, buf3); if (ptr 0) printf(buffer 2 is greater
5、 than buffer 3n); else printf(buffer 2 is less than buffer 3n); return 0; 函数名: strncmpi 功 能: 将一个串中的一部分与另一个串比较, 不管大小写 用 法: int strncmpi(char *str1, char *str2, unsigned maxlen); 程序例: #include #include int main(void) char *buf1 = BBB, *buf2 = bbb; int ptr; ptr = strcmpi(buf2, buf1); if (ptr 0) printf(
6、buffer 2 is greater than buffer 1n); if (ptr 0) printf(buffer 2 is less than buffer 1n); if (ptr = 0) printf(buffer 2 equals buffer 1n); return 0; 函数名: strcpy 功 能: 串拷贝 用 法: char *strcpy(char *str1, char *str2); 程序例: #include #include int main(void) char string10; char *str1 = abcdefghi; strcpy(strin
7、g, str1); printf(%sn, string); return 0; 函数名: strcspn 功 能: 在串中查找第一个给定字符集内容的段 用 法: int strcspn(char *str1, char *str2); 程序例: #include #include #include int main(void) char *string1 = 1234567890; char *string2 = 747DC8; int length; length = strcspn(string1, string2); printf(Character where strings int
8、ersect is at position %dn, length); return 0; 函数名: strdup 功 能: 将串拷贝到新建的位置处 用 法: char *strdup(char *str); 程序例: #include #include #include int main(void) char *dup_str, *string = abcde; dup_str = strdup(string); printf(%sn, dup_str); free(dup_str); return 0; 函数名: stricmp 功 能: 以大小写不敏感方式比较两个串 用 法: int s
9、tricmp(char *str1, char *str2); 程序例: #include #include int main(void) char *buf1 = BBB, *buf2 = bbb; int ptr; ptr = stricmp(buf2, buf1); if (ptr 0) printf(buffer 2 is greater than buffer 1n); if (ptr 0) printf(buffer 2 is less than buffer 1n); if (ptr = 0) printf(buffer 2 equals buffer 1n); return 0
10、; 函数名: strerror 功 能: 返回指向错误信息字符串的指针 用 法: char *strerror(int errnum); 程序例: #include #include int main(void) char *buffer; buffer = strerror(errno); printf(Error: %sn, buffer); return 0; 函数名: strcmpi 功 能: 将一个串与另一个比较, 不管大小写 用 法: int strcmpi(char *str1, char *str2); 程序例: #include #include int main(void)
11、 char *buf1 = BBB, *buf2 = bbb; int ptr; ptr = strcmpi(buf2, buf1); if (ptr 0) printf(buffer 2 is greater than buffer 1n); if (ptr 0) printf(buffer 2 is less than buffer 1n); if (ptr = 0) printf(buffer 2 equals buffer 1n); return 0; 函数名: strncmp 功 能: 串比较 用 法: int strncmp(char *str1, char *str2, int maxlen); 程序例: #include #include int main(void) char *buf1 = aaabbb, *buf2 = bbbccc, *buf3 = ccc; int ptr; ptr = strncmp(buf2,buf1,3); if (ptr 0) printf(buffer 2 is greater than buffer 1n); else printf(buffer 2 is less than buffer 1n); ptr = strncmp(buf2,buf3,3); if (ptr 0) printf(buffer
