#include <stdio.h>
int main(void){
  int a, b, c, d, min, m1, m2;
  printf("请输入四个整数：");
  scanf("%d, %d, %d, %d", &a, &b, &c, &d);
  if(a>b) {min=a; a=b;b=min;}
  if(a>c) {min=c; a=c; c=min;}
  if(a>d) {min=d; a=d; d=min;}
  if(b>c) {m1=b; b=c; c=m1;}
  if(b>d) {m1=b; b=d; d=m1;}
  if(c>d) {m2=c; c=d; d=m2;}
  printf("按从小到大的顺序排列:%d,%d,%d,%d\n",a, b, c, d);
  return 0;
}