有以下程序

#include <stdio.h>

#include <string.h>

void fun(char s[][10],int n)

{ char t;int i,j;

for(i=0;i<n-1;i++)

for(j=i+1;j<n;j++)

/* 比较字符串的首字符大小，并交换字符串的首字符 */

if (s[i][0] > s[j][0]) {t=s[i][0];s[i][0]=s[j][0];s[j][0]=t;}

}

main()

{ char ss[5][10]={"bcc","bbcc","xy","aaaacc","aabcc"};

fun(ss,5); printf("%s,%s\n",ss[0],ss[4]);

}

程序运行结果是

A)xy,aaaacc

B)aaaacc,xy

C) xcc,aabcc

D) acc,xabcc