C语言:输入4个数，按从小到大的顺序输出

#include "stdio.h"
main()
{
    int a, b, c, d, t;
    printf("请输入4个整数:");
    scanf("%d%d%d%d",&a, &b, &c, &d);
    if(a > b)
    { 
		t = a; 
		a = b; 
		b = a;
	}
    if(a > c)
    { 
		t = a; 
		a = c; 
		c = t;
	}
    if(a > d)
    { 
		t = a; 
		a = d; 
		d = t;
	}
    if(b > c)
    { 
		t = b; 
		b = c; 
		c = t;
	}
    if(b > d)
    { 
		t = b; 
		b = d; 
		d = t;
	}
    if(c > d)
    { 
		t = c; 
		c = d; 
		d = t;
	}
    printf("从小到大排序为：%d < %d < %d < %d\n",a, b, c, d);
}