t63.c

c语言小程序100个

#include <conio.h>
#include <stdio.h>
#define  N 81

void readwriteDAT();

void chg(char *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();
system("pause");
}

void readwriteDAT()
{ int i ;
 char a[N] ;
 FILE *rf, *wf ;

 rf = fopen("in.dat", "r") ;
 wf = fopen("out.dat", "w") ;
 for(i = 0 ; i < 10 ; i++) {
   fscanf(rf, "%s", a) ;
   chg(a) ;
   fprintf(wf, "%s\n", a) ;
 }
 fclose(rf) ;
 fclose(wf) ;
}