Cisco 3550 交换机 配置 QOS

#include <stdio.h>
char* strcat(char*dest,char *src)
{
char *d=dest;
char *s=src;
while(*d)
d++;
while(*s)
{
*d=*s;
d++;
s++;
}
*d='\0';
return dest;
}

int main(void)
{
char str[20]="hello";
char *p="world";
strcat(str,p);
printf("%s\n",str);
return 0;
}
//更简洁
char* strcat ( char * dst , const char * src )
{
char * cp = dst;
while( *cp )
cp++; /* find end of dst */
while( *cp++ = *src++ ) ; /* Copy src to end of dst *///一直到赋完'\0'
return( dst ); /* return dst */
}