C语言三个数大小排序，为什么第三个数就乱码？

Question

#include<stdio.h>
int main()
{
    double a, b, c,temp;
    scanf("%lf%lf%lf", &a, &b, &c);
    if (a < b) temp = a; a = b; b = temp;
    if (a < c) temp = a; a = c; c = temp;
    if (b < c) temp = b; b=c; c = temp;
    printf("%f %f %f\n", a, b, c);
    return 0;
}
```![图片说明](https://img-ask.csdn.net/upload/201911/07/1573138943_363912.png)

Answer 1

大括号啊哥，if后面不加大括号能行吗，前面几位在说什么。。。

#include
int main()
{
double a, b, c,temp;
scanf("%lf%lf%lf", &a, &b, &c);
if (a < b){temp = a; a = b; b = temp;}
if (a < c){temp = a; a = c; c = temp;}
if (b < c){temp = b; b = c; c = temp;}
printf("%f %f %f\n", a, b, c);
return 0;
}