c++常用字符串操作函数 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("%s\n", 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 int main(void) { char destination[25]; char *blank = " ", *c = "C++", *Borland = "Borland"; strcpy(destination, Borland); strcat(destination, blank); strcat(destination, c); printf("%s\n", 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 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: %d\n", c, ptr-string); else printf("The character was not found\n"); return 0; } 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 1\n"); else printf("buffer 2 is less than buffer 1\n"); ptr = strcmp(buf2, buf3); if (ptr > 0) printf("buffer 2 is greater than buffer 3\n"); else printf("buffer 2 is less than buffer 3\n"); 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 *bu...
