1_pro.c

来自「C源代码 计算机等级考试C语言上机题」· C语言 代码 · 共 48 行

#include  <stdio.h>
#include  <string.h>
#include  <conio.h>
char xx[20][80];
void jsSort()
{
  int i,j,k,strl;
  char ch;
  for(i=0;i<20;i++)
  {
    strl=strlen(xx[i]);
    for(j=1;j<strl-2;j=j+2)
      for(k=j+2;k<strl;k=k+2)
        if(xx[i][j]>xx[i][k])
         { ch=xx[i][j]; xx[i][j]=xx[i][k]; xx[i][k]=ch; }
  }
}
void main()
{
  readDat();
  jsSort();
  writeDat();
}
readDat()
{ 
  FILE *in;
  int i=0;
  char *p;
  in=fopen("IN76.DAT","r");
  while(i<20&&fgets(xx[i],80,in)!=NULL)
  {
    p=strchr(xx[i],'\n');
    if(p)*p=0;
    i++;
  }
  fclose(in);
}
writeDat()
{
  FILE *out;
  int i;
  out=fopen("OUT76.DAT","w");
  clrscr();
  for(i=0;i<20;i++)
  { printf("%s\n",xx[i]); fprintf(out,"%s\n",xx[i]); }
  fclose(out);
}