程序代码：

#include<stdio.h>
#include<string.h>
#define N 2

struct workman
{
  char name[10];
  float num;
}work[N];

void getdate()
{
int i;
printf("please input the name and number\n");
for(i=0;i<N;i++)

 scanf("%s%f",work[i].name,&work[i].num);
}

void arrange()
{
  int i,j,n,t;
  char a[10];
  for(i=0;i<N;i++)
    { t=i;
       for(j=i;j<N;j++)
          if(work[t].num>work[j].num)
                     t=j;
      n=work[i].num; work[i].num=work[t].num; work[i].num=n;
     strcpy(a,work[i].name); strcpy(work[i].name,work[t].name); strcpy(work[t].name,a);
     work[i].name[strlen(work[i].name)]='\0';
     work[i].name[strlen(work[t].name)]='\0';
    }
}
int main()
{
int i;
float t;
arrange();
getdate();


printf("the arranged array is\n");
for(i=0;i<N;i++)
  printf("%-8s%.0f\n",work[i].name,work[i].num);


printf("please input the workman's number\n");
scanf("%f",&t);

for(i=0;i<N;i++)
  if(t==work[i].num)
      printf("%s\n",work[i].name);
      return 0;
}