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 37 行

#include  <conio.h>
#include  <string.h>
#include  <stdio.h>
#include  <ctype.h>
#define  N 81
void readwriteDAT();
void chg(char*s)
{
  while(*s)
    if(*s=='z'||*s=='Z')  { *s-=25; s++; }
    else if(*s>='a'&&*s<='y')  { *s+=1; s++; }
    else if(*s>='A'&&*s<='Y')  { *s+=1; s++; }
    else s++;  
}
main()
{ 
  char a[N];
  clrscr();
  printf("Enter a string : "); gets(a);
  printf("The original string is : "); puts(a);
  chg(a);
  printf("The string after modified : ");
  puts (a);
  readwriteDAT() ;
}
void readwriteDAT()
{
  int i ;
  char a[N] ;
  FILE *rf, *wf ;
  rf = fopen("IN82.DAT", "r") ;
  wf = fopen("OUT82.DAT", "w") ;
  for(i = 0 ; i < 10 ; i++) 
  { fscanf(rf, "%s", a); chg(a);  fprintf(wf, "%s\n", a); }
  fclose(rf); fclose(wf);
}