C++ ASCII码排序

Description 输入三个字符后，按各字符的ASCII码从小到大的顺序输出这三个字符。Input 三个字符，之间无空格。Output 输出一行，字符中间用一个空格分开。Sample Input qwe Sample Output e q w

这么写，可以吗？#include <iostream> using namespace std; void sort(char ch[]) { int i, j; char temp; for(i = 0; i < 3; i++) for( j = 0; j <= i; j++) { temp = ch[i]; ch[i] = ch[j]; ch[j] = temp; } } int main() { char ch[4]; while(cin >> ch) { sort(ch); cout << ch[0] << " " << ch[1] << " " << ch[2] << endl; } return 0; }

#include <stdio.h> void Sort_arry_str(char str[]) { char ch; if(str[0] > str[1]) { ch = str[0],str[0] = str[1],str[1] = ch; } if(str[0] > str[2]) { ch = str[0],str[0] = str[2],str[2] = ch; } if(str[1] > str[2]) { ch = str[1],str[1] = str[2],str[2] = ch; } printf("%c %c %c\n",str[0],str[1],str[2]); } int main(void) { char str[4]; gets(str); Sort_arry_str(str); return 0; }