for循环的经典应用，冒泡排序
#include<stdio.h>
int main()
{
int a[10] = {0}, temp = 0;
printf("input 10 numbers:\n");
for (int i = 1; i <= 10;i++)
{
scanf("%d", &a[i - 1]);
}
for (int i = 0; i < 9;i++)
{
for (int n = 0; n < 9-i;n++)
{
if(a[n]<a[n+1])
{
temp = a[n + 1];
a[n + 1] = a[n];
a[n] = temp;
}
}
}
for (int i = 0; i <= 9;i++)
{
printf("%d ,", a[i]);
}
return 0;
}
