help on file editing

[Jerry Khoo]

i am currently working on an assignment that requires the program to
manage the files like editing file content, modifying file content,
and deleting file contents.

My question is what sort of header files i need to open a files, and
what sort of function i can used to input/output a file content,
another thing is that what sort of functions are they for me to know
the location of the files pointer?

[John Harrison]

"Jerry Khoo" <je*********@yahoo.com> wrote in message
news:b6************************@posting.google.com ...

i am currently working on an assignment that requires the program to
manage the files like editing file content, modifying file content,
and deleting file contents.

My question is what sort of header files i need to open a files, and
what sort of function i can used to input/output a file content,
another thing is that what sort of functions are they for me to know
the location of the files pointer?

Don't you have access to a manual? Look at this site if you don't
http://www.dinkumware.com/refxcpp.html

All the functions you need are in the fstream header.

john

[Mike Wahler]

"Jerry Khoo" <je*********@yahoo.com> wrote in message
news:b6************************@posting.google.com ...

i am currently working on an assignment that requires the program to
manage the files like editing file content, modifying file content,
and deleting file contents.

My question is what sort of header files i need to open a files,
<fstream>
and
what sort of function i can used to input/output a file content,
Input:

read(), operator>>(), get()
Output:

write(), operator<<(), put()
another thing is that what sort of functions are they for me to know
the location of the files pointer?

tellg()

Where's your textbook?

-Mike

[Vladimir Shishkovsky]

You can use old C style to open files. Here is come example of code:

#include <stdio.h>

FILE *in, *out;
char ch;

void main()
{
in=fopen("c:\test.txt", "rb");
out=fopen("c:\test-res.txt", "wb");

while (1)
{
ch=fgetc(in);
if(feof(in))break;
fputc(ch, out);
}
}

I think that you will understand everything thet i wrote.

Best regards. Vladimir Shishkovsky
"Mike Wahler" <mk******@mkwahler.net> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
news:Y1******************@newsread2.news.atl.earth link.net...

"Jerry Khoo" <je*********@yahoo.com> wrote in message
news:b6************************@posting.google.com ...

i am currently working on an assignment that requires the program to
manage the files like editing file content, modifying file content,
and deleting file contents.

My question is what sort of header files i need to open a files,

<fstream>

and
what sort of function i can used to input/output a file content,

Input:

read(), operator>>(), get()
Output:

write(), operator<<(), put()

another thing is that what sort of functions are they for me to know
the location of the files pointer?

tellg()

Where's your textbook?

-Mike

[Thomas Matthews]

Vladimir Shishkovsky wrote:
Don't Top-post, rearranged.

"Mike Wahler" <mk******@mkwahler.net> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
news:Y1******************@newsread2.news.atl.earth link.net...

"Jerry Khoo" <je*********@yahoo.com> wrote in message
news:b6************************@posting.google.c om...

i am currently working on an assignment that requires the program to
manage the files like editing file content, modifying file content,
and deleting file contents.

My question is what sort of header files i need to open a files,
<fstream>

and
what sort of function i can used to input/output a file content,

Input:

read(), operator>>(), get()
Output:

write(), operator<<(), put()

another thing is that what sort of functions are they for me to know
the location of the files pointer?

tellg()

Where's your textbook?

-Mike

You can use old C style to open files. Here is come example of code:

#include <stdio.h>

FILE *in, *out;
char ch;

void main()

The main function returns an int. Always.
int main(void)

{
in=fopen("c:\test.txt", "rb"); The "\t" is an escape sequence for a tab. To get a backslash
character one has to use two backslashes:
in = fopen("c:\\test.txt", "rb");

Not also that one should always check if the open succeeded:
if (!in)
{
/* Handle error here */
}

out=fopen("c:\test-res.txt", "wb"); out = fopen("c:\\test-res.txt", "wb");
if (!out)
{
/* Handle error here */
}

while (1)
{
ch=fgetc(in);
if(feof(in))break;
fputc(ch, out);
} return EXIT_SUCCESS; /* see <stdlib.h> or <cstdlib> */ }
A more efficient method would be to read blocks of data
at a time. The size of the block should be something large
enough to keep the file device running for a while, but
small enough to fit into the program space.

I think that you will understand everything thet i wrote. that I

Best regards. Vladimir Shishkovsky

--
Thomas Matthews

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