C++字符型数组常用函数

C++字符型数组常用函数
函数名: strcmp
功 能: 串比较
用 法: int strcmp(char *s1, char *s2);

当s1

#include <string.h>   
#include <stdio.h>   
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 than buffer 3n");   
else   
printf("buffer 2 is less than buffer 3n");   
return 0;   
}  

/下面再给你其他相关的函数应用/

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.h>   
int main(void)   
{   
char string[10];   
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 <string.h>   
#include <stdio.h>   
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;   
} 

原型：strlen( const char string[] );
功能：统计字符串string中字符的个数
例程：

#include <iostream>     
#include <cstring>     
int main()     
{     
  char str[100];      
  cout <<"请输入一个字符串:";     
  cin >>str;     
  cout <<"The length of the string is :"<<strlen(str)<<"个"<<endl;     
  return 0;    
}