Open file populate array, not as easy as it sound first time round

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January 5th, 2006, 03:24 PM

lamefif

Registered User

Join Date: Dec 2004

Posts: 5

Time spent in forums: 2 h 13 m 18 sec
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Open file populate array, not as easy as it sound first time round

here is my attempt at loading a file:
dont laugh

Code:

if(action=="open"){ 
ifstream imput("outfile.txt"); for(int i=0;i<6;i++){ 
string tempName=""; 
float temppPrice=0,tempsPrice=0;
 int tempQ=0;
 imput >>tempName >> temppPrice >> tempsPrice>>tempQ; 
sarray[i].setName(tempName); sarray[i].setpPrice(temppPrice); 
sarray[i].setsPrice(tempsPrice); sarray[i].setQuantity(tempQ); 
} 
cout<<"done"<<endl; } 
}

file format:
Red Stuff
10.5
5
20.5
Green Stuff
10.5
5
20.5
Yellow Stuff
10.5
5
20.5
Orange Stuff
10.5
5
20.5
Pepper Stuff
10.5
5
20.5
Suger Stuff
10.5
5
20.5
but im getting this:
----------------------------------------------------------
Pruduct 1 Red | 0 | 0 | 0
----------------------------------------------------------
Pruduct 2 | 0 | 0 | 0
----------------------------------------------------------
Pruduct 3 | 0 | 0 | 0
----------------------------------------------------------
Pruduct 4 | 0 | 0 | 0
----------------------------------------------------------
Pruduct 5 | 0 | 0 | 0
----------------------------------------------------------
Pruduct 6 | 0 | 0 | 0
----------------------------------------------------------
instead of:
----------------------------------------------------------
Pruduct 1 Red Stuff | 10.5 | 20.5 | 5
----------------------------------------------------------
Pruduct 2 Green Stuff | 10.5 | 20.5 | 5
----------------------------------------------------------
Pruduct 3 Yellow Stuff | 10.5 | 20.5 | 5
----------------------------------------------------------
Pruduct 4 Orange Stuff | 10.5 | 20.5 | 5
----------------------------------------------------------
Pruduct 5 Pepper Stuff | 10.5 | 20.5 | 5
----------------------------------------------------------
Pruduct 6 Suger Stuff | 10.5 | 20.5 | 5
----------------------------------------------------------

thanks

January 5th, 2006, 04:49 PM

salem

Contributed User

Join Date: Jun 2005

Posts: 3,906

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The basic >> operator stops at white space, so everything stops when you've got past "Red".

Try

Code:

#include <iostream>
#include <string>
#include <fstream>
using namespace std;
int main()
{
  ifstream imput("outfile.txt");
  for(int i=0;i<6;i++){
    char tempName[100]="";
    float temppPrice=0,tempsPrice=0;
    float tempQ=0;
    imput.getline(tempName,sizeof tempName);  /* read a whole line */
    imput >> temppPrice >> tempsPrice>>tempQ; /* read numeric data */
    imput.ignore();                           /* skip to start of next line */
    cout << tempName << temppPrice << tempsPrice << tempQ << endl;
  }
}