编写一个C++程序,任意从键盘输入两个字符,能将他们按由大到小的顺序输出

#include using namespace std; void Swap(char & a, char & b) { if(a>b) { cout << a<<","<<b<<endl; } else { cout << b<<","<<a<<endl; } } int main() { char a, b; cin