有以下程序:
# include <stdio.h>
struct S{int n; int a[20]; };
void f(struct S *p)
{ int i,j,t;
for (i=0; i<p->n-1; i++)
for (j=i+1; j<p->n; j++)
if (p->a[i] > p->a[j]) { t= p->a[i]; p->a[i] = p->a[j]; p->a[j] = t; }
}
main()
{ int i; struct S s={10, {2,3,1,6,8,7,5,4,10,9}};
f(&s);
for (i=0; i<s.n; i++) printf("%d,", s.a[i]);
}
程序运行后的输出结果是( )
A.2,3,1,6,8,7,5,4,10,9,
B.10,9,8,7,6,5,4,3,2,1,
C.1,2,3,4,5,6,7,8,9,10,
D.10,9,8,7,6,1,2,3,4,5,