ch23-8.c

C语言程序设计上机指导与练习 冶金工业出版社 刘怀亮

#include <stdio.h>
#include <string.h>
#include <conio.h>

typedef struct{
   int x1,x2,x3;
}data;

data aa[10],bb[10];

int jsSort()
{
   int i, j, cnt=0;
   data ch;
   for(i=0;i<200;i++)
      if(aa[i].x2>aa[i].x1+aa[i].x3) bb[cnt++]=aa[i];
   for(i=0;i<cnt-1;i++)
      for(j=i+1;j<cnt;j++)
         if(bb[i].x2+bb[i].x3<bb[j].x2+bb[j].x3) {ch=bb[i];bb[i]=bb[j];bb[j]=ch;}
   return cnt;
}

readDat()
{
   int i;
   printf("请输入10组三位数：\n");
   for(i=0; i<10; i++) 
      scanf("%d %d %d",&aa[i].x1,&aa[i].x2,&aa[i].x3);
}

writeDat(int count)
{
   FILE *out;
   int i;
   out=fopen("out.dat","w");
   for(i=0; i<count; i++){
      printf("%d,%d,%d 第二个数+第三个数= %d\n",bb[i].x1,bb[i].x2,bb[i].x3,
         bb[i].x2+bb[i].x3); fprintf(out,"%d %d %d\n", bb[i].x1,bb[i].x2,bb[i].x3);
   }
   fclose(out);
}

void main()
{
   int count;
   readDat();
   count=jsSort(); /*返回满足条件的个数*/
   writeDat(count);
}