编辑代码

#include"stdio.h"
#include"string.h"
void fun(char *w, int n){
    char t, *s1, *s2;
    s1 = w;
    s2 = w+n-1;
    while(s1<s2){
        t=*s1++;
        *s1=*s2--;
        *s2=t;
    }
}
void main(){
	static char *p = "1234567";
    fun(p,strlen(p));
    printf("%s",p);
}