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Mar 19th, 2007

file processing, Random-access Files

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i am a newbie in C++ file processing...
Any1 can guide me to search for an item(lastname) in the example below?
what is seekg or seekp... how to use it?

C++ Syntax (Toggle Plain Text)
#include<iostream>
#include<fstream>
using namespace std;
 
void main(){
char firstname[10], lastname[10];
int age;
 
ofstream write("text.txt", ios::app);/*actually i am not sure what ios::app does*/
 
cout<<"firstname: ";
cin.getline(firstname,sizeof(firstname));
cout<<"last name: ";
cin.getline(lastname,sizeof(lastname));
cout<<"age: ";
cin>>age;
cin.ignore();
 
write<<firstname<<endl;
write<<lastname<<endl;
write<<age<<endl;
}
#include<iostream>
#include<fstream>
using namespace std;

void main(){
char firstname[10], lastname[10];
int age;

ofstream write("text.txt", ios::app);/*actually i am not sure what ios::app does*/

cout<<"firstname: ";
cin.getline(firstname,sizeof(firstname));
cout<<"last name: ";
cin.getline(lastname,sizeof(lastname));
cout<<"age: ";
cin>>age;
cin.ignore();

write<<firstname<<endl;
write<<lastname<<endl;
write<<age<<endl;
}

Last edited by ~s.o.s~; Mar 19th, 2007 at 1:04 pm. Reason: Removed the weird coloring and fixed code tags, learn to use them.

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Derice

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Mar 19th, 2007

Re: file processing, Random-access Files

Some good links for File processing in C++ are here, here and here.

~s.o.s~

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Failure as a human

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Mar 19th, 2007

Re: file processing, Random-access Files

Click to Expand / Collapse Quote originally posted by Derice ...

i am a newbie in C++ file processing...
Any1 can guide me to search for an item(lastname) in the example below?
what is seekg or seekp... how to use it?

Not a clue what you are asking. Maybe you need to explain the problem. Remember, we're new to it so details will help.

WaltP

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Mar 19th, 2007

Re: file processing, Random-access Files

i hope to search for the word/phrase in my text file instead of print the whole text.

Derice

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Mar 19th, 2007

Re: file processing, Random-access Files

Read the links posted by me in the second post.

An eg.

C++ Syntax (Toggle Plain Text)
string inStr;
string searchFor = "hello";
ostream in ("test.txt");
 
while (getline (in, inStr))
{
    if (inStr == searchStr)
    {
        //process
    }
}
string inStr;
string searchFor = "hello";
ostream in ("test.txt");

while (getline (in, inStr))
{
    if (inStr == searchStr)
    {
        //process
    }
}

~s.o.s~

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