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Reading and Writing file

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Reading and Writing file

 
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  #1
Oct 1st, 2006
Can anyone help me...i have a file modt.txt and i want to save the content in modt2.txt but it seems my code is not working. Moreover,
if i have the content of the 1st file Have a nice day. i want to save it to the 2nd file without double space it should be Have a nice day. I have this as my code:

C Syntax (Toggle Plain Text) 
  1. #include <stdio.h>
  2.  
  3. void copyf(char *fname1, char *fname2){
  4.  FILE *fp1,*fp2;
  5.  int x;
  6.  
  7.  if (((fp1=fopen(fname1,"r"))==NULL)||((fp2=fopen(fname2,"w"))==NULL))
  8.  {
  9.   printf("error:unable to open the filed\n");
  10.   exit(1);
  11.  }
  12.   while((x=getc(fp1))!=EOF)
  13.     putc(x,fp2);
  14.   fclose(fp1);
  15.   fclose(fp1);
  16. }
  17. main(){
  18.  
  19.  copyf("modt.txt","modt2.txt");
  20.  
  21. }
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Re: Reading and Writing file

 
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  #2
Oct 2nd, 2006
don't understand your problem. In modt.txt you have Have a nice day and in modt2.txt I also have the same string.
>i want to save it to the 2nd file without double space
This part I don't understand. Where you have double space? In 2nd file?
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Re: Reading and Writing file

 
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  #3
Oct 2nd, 2006
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Originally Posted by andor View Post
don't understand your problem. In modt.txt you have Have a nice day and in modt2.txt I also have the same string.
>i want to save it to the 2nd file without double space
This part I don't understand. Where you have double space? In 2nd file?
im sory the first txt file should have a content of "Have_ _ a nice day" two spaces then i have to save it to the 2nd file and should only have one spcae "Have_a nice day"...
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Re: Reading and Writing file

 
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  #4
Oct 2nd, 2006
C Syntax (Toggle Plain Text) 
  1. while((x=getc(fp1))!=EOF){
  2.       if ((unsigned char) x != ' ' || spaceOcured != 1)
  3.          putc(x,fp2);
  4.       if ((unsigned char) x == ' '){
  5.          spaceOcured = 1;
  6.       }
  7.       else{
  8.          spaceOcured = 0;
  9.       }
  10.    }
Of course you must to define spaceOcured at the begining of copyf function, for example to char and intialise it to zero.
Last edited by andor; Oct 2nd, 2006 at 4:51 am.
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Re: Reading and Writing file

 
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  #5
Oct 2nd, 2006
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Originally Posted by andor View Post
C Syntax (Toggle Plain Text) 
  1. while((x=getc(fp1))!=EOF){
  2.       if ((unsigned char) x != ' ' || spaceOcured != 1)
  3.          putc(x,fp2);
  4.       if ((unsigned char) x == ' '){
  5.          spaceOcured = 1;
  6.       }
  7.       else{
  8.          spaceOcured = 0;
  9.       }
  10.    }
Of course you must to define spaceOcured at the begining of copyf function, for example to char and intialise it to zero.
i have an error spaceOccured undefined symbol...
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Re: Reading and Writing file

 
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  #6
Oct 2nd, 2006
i got it i initialize spaceOccured as char
char spaceOcured=0;
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Re: Reading and Writing file

 
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  #7
Oct 2nd, 2006
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Originally Posted by vbcielle View Post
i got it i initialize spaceOccured as char
char spaceOcured=0;
it doesnt create a new file

with this code whats wrong?:

C Syntax (Toggle Plain Text) 
  1. #include <stdio.h>
  2. char spaceOcured;
  3. void copyf(char *fname1, char *fname2){
  4.  FILE *fp1,*fp2;
  5.  int x;
  6.  spaceOcured=0;
  7.  if (((fp1=fopen(fname1,"r"))==NULL)||((fp2=fopen(fname2,"w"))==NULL))
  8.  {
  9.   printf("error:unable to open the filed\n");
  10.   exit(1);
  11.  }
  12.  
  13.   while((x=getc(fp1))!=EOF){
  14.       if ((unsigned char) x != ' ' || spaceOcured != 1)
  15.          putc(x,fp2);
  16.       if ((unsigned char) x == ' '){
  17.          spaceOcured = 1;
  18.       }
  19.       else{
  20.          spaceOcured = 0;
  21.       }
  22.   }
  23.    fclose(fp1);
  24.   fclose(fp1);
  25. }
  26. main(){
  27.  
  28.  copyf("d:\modt.txt","d:\modt2.txt");
  29.  getch();
  30.  
  31. }
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Re: Reading and Writing file

 
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  #8
Oct 2nd, 2006
Hm are you shore?
C Syntax (Toggle Plain Text) 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. void copyf(char *fname1, char *fname2){
  5.    FILE *fp1,*fp2;
  6.    int x;
  7.    char spaceOcured = 0;
  8.  
  9.    if (((fp1=fopen(fname1,"r"))==NULL)||((fp2=fopen(fname2,"w"))==NULL)){
  10.       printf("error:unable to open the filed\n");
  11.       exit(1);
  12.    }
  13.    while((x=getc(fp1))!=EOF){
  14.       if ((unsigned char) x != ' ' || spaceOcured != 1)
  15.          putc(x,fp2);
  16.       if ((unsigned char) x == ' '){
  17.          spaceOcured = 1;
  18.       }
  19.       else{
  20.          spaceOcured = 0;
  21.       }
  22.    }
  23.  
  24.    fclose(fp1);
  25.    fclose(fp1);
  26. }
  27.  
  28. int main(){
  29.  
  30.    copyf("modt.txt","modt2.txt");
  31.  
  32.  return 0;
  33. }
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Re: Reading and Writing file

 
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  #9
Oct 2nd, 2006
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Originally Posted by andor View Post
Hm are you shore?
C Syntax (Toggle Plain Text) 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. void copyf(char *fname1, char *fname2){
  5.    FILE *fp1,*fp2;
  6.    int x;
  7.    char spaceOcured = 0;
  8.  
  9.    if (((fp1=fopen(fname1,"r"))==NULL)||((fp2=fopen(fname2,"w"))==NULL)){
  10.       printf("error:unable to open the filed\n");
  11.       exit(1);
  12.    }
  13.    while((x=getc(fp1))!=EOF){
  14.       if ((unsigned char) x != ' ' || spaceOcured != 1)
  15.          putc(x,fp2);
  16.       if ((unsigned char) x == ' '){
  17.          spaceOcured = 1;
  18.       }
  19.       else{
  20.          spaceOcured = 0;
  21.       }
  22.    }
  23.  
  24.    fclose(fp1);
  25.    fclose(fp1);
  26. }
  27.  
  28. int main(){
  29.  
  30.    copyf("modt.txt","modt2.txt");
  31.  
  32.  return 0;
  33. }
hello modt2.txt is not created...
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Re: Reading and Writing file

 
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  #10
Oct 2nd, 2006
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Originally Posted by vbcielle View Post
hello modt2.txt is not created...
The only diffrence is the while loop and the declaration of spaceOcured. There is no sense that mod2 is not created. Create a new dir and copy the c file and the modt.txt. Try again. It should create the file modt2.txt. Do you heve this error message error:unable to open the filed? If U still have problem comment the while loop and leave only the fopen functions and see the result.
Last edited by andor; Oct 2nd, 2006 at 6:03 am.
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