简单使用reverse

头文件#include <algorithm> 取反string

string = s; cin >> s; reverse(s.begin(）， s.end()); cout << s;

取反字符数组

char l[int] = "..." reverse(l, l+strlen(l)); cout << l;

[参考]https://blog.csdn.net/qq_39093164/article/details/90107832