#include <stdlib.h>
#include <stdio.h>
#include <string.h>
//向右循环移位
void loopmover ( char * pstr, int steps )
{
int n = strlen(pstr) - steps;
char *buff=(char*)malloc(strlen(pstr)+1);
strcpy(buff,pstr+n);
strncat(buff,pstr,n);
buff[strlen(pstr)]='\0';
strcpy(pstr,buff);
free(buff);
}
//向左循环移位
void loopmovel ( char * pstr, int steps )
{
char *buff=(char*)malloc(strlen(pstr)+1);
strcpy(buff,pstr+steps);
strncat(buff,pstr,steps);
buff[strlen(pstr)]='\0';
strcpy(pstr, buff);
free(buff);
}
int main ()
{
char a[]="abcdefg123456";
printf("%s\n",a);
loopmover(a,5);//右移5位
printf("%s\n",a);
loopmovel(a,5);
printf("%s\n",a);
system("PAUSE");
return 0;
}
运行结果：
C库函数中字符串处理函数集合：
http://www.cppblog.com/GUO/archive/2010/09/13/126522.html
posted on 2010-09-13 19:40
CrazyNerd 阅读(893)
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