c++常用字符串操作函数..doc

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 stdio.h#include string.hint 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 string.h#include stdio.hint 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 string.h#include stdio.hint 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，str1str2，返回值 0；两串相等，返回0程序例:#include string.h#include stdio.hint 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 string.h#include stdio.hint main(void){?? char *buf1 = BBB, *buf2 = bbb;?? int ptr;?? ptr = strcmpi(buf2, buf1);?? if (ptr 0)????? printf(buffer 2 is greater than buffer 1\n);?? if (ptr 0)????? printf(buffer 2 is less than buffer 1\n);?? if (ptr == 0)????? printf(buffer 2 equals buffer 1\n);?? return 0;} ? 函数名: strcpy功 能: