c++简单指针问题，有偿，请诸君解决

Question

编写函数SwapCharPointer()实现交换两个字符型指针的值的功能。例如，已知“char *s1="teacher";char *s2="student";”，执行“SwapCharPointer(&s1,&s2);”或“SwapCharPointer(s1,s2);”后s1指向字符串“student”的首地址，s2指向字符串“teacher”的首地址。 程序会输入两个字符串s1，s2；在进行调换后输出调换后的s1，s2

Sample Input 0

student
teacher

Sample Output 0

teacher
student

Answer 1

用指针的指针的话，直接交换指针地址即可

#include <iostream>
using namespace std;
void SwapCharPointer(char** s1, char** s2) {
    char* temp = *s1;
    *s1 = *s2;
    *s2 = temp;
}
int main() {
    char s1[100],s2[100],*p = s1,*q=s2;
    cin.getline(p,100);
    cin.getline(q,100);
    SwapCharPointer(&p, &q);
    cout << p << endl; 
    cout << q << endl; 
    return 0;
}