void swap (char *x,char *y) { char *t; t=x; x=y; y=t; } void

void swap (char *x,char *y) { char *t; t=x; x=y; y=t; } void main() { char *s1="abc",*s2="123"; swa
void swap (char *x,char *y)
{
char *t; t=x; x=y; y=t;
}
void main()
{
char *s1="abc",*s2="123";
swap(s1,s2);
printf ("%s,%sn",s1,s2);
}
运算方法和结果,