problem with using filename.write(....)?

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hi,
i want to save 10000 record in a file using myfile.write but information didnt save correctly . this is myfile:

[code]
جج^ى_±ؤ‏/ ¯– 
   p p îى_±         P‎û7           0     ˆ‏/    ے/ گ ’=|±    ج‏/ ك" ط‏/ "ٌv P‎ے/ )´+w P‎›َ u         P‎            ن‏/     ےےےےUص'w3    $    0ے/ ü³+wè  P‎                è  P‎                                                                                                                                                                                                ü=L×>
îےîے    ¨ p  p   p   0  
  @ 0   @ î   
       ً1 ً1 مـ5‍ك>
¨xH ےےےے                ط1 ط1       p                                  

 [/code]

can anyone help?

Posted 22-Jun-11 23:19pm

zahraZa

Updated 22-Jun-11 23:31pm

Prerak Patel

v3

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Comments

Sandeep Mewara 23-Jun-11 5:25am

Can you try and write in English please?

Manfred Rudolf Bihy 23-Jun-11 5:34am

Hope that the garbage on my screen is not due to viewing this on my Samsung Galaxy Tablet ;-)

Prerak Patel 23-Jun-11 5:36am

How do you write to file? Share code.

Joan M 23-Jun-11 5:40am

Add code just to allow us to see/imagine what can be going on.
Moreover it would be great to know which kind of data you want to store and how you want to retrieve it from the file...

ShilpiP 23-Jun-11 5:40am

Please share your code write data in file.

zahraZa 23-Jun-11 6:58am

this is my code:
<prev>
void myclass::Get(){
ofstream saveF("c:/ms/SAVE.txt",ios::binary);
if(!saveF){
cout<<"\n\t\t\t ! Sorry can't open !\n";
exit(1);
}
else{
static string charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
myclass myRecord;
string result;
myclass *tmyclass=new myclass();
int myArray[10]={0};
srand(time(NULL));
node=new myclass();
for(int i=0;i<10000;i++){
myRecord.code=rand()%999+10000;
myRecord.Dgenerate = rand()%(21)+1350;
myRecord.Dexpire= = rand()%(21)+1370;
for(int m=0;m<9;m++){
myRecord.name[m]=charset[rand()%charset.length()];
}
myRecord.purity==rand()%(98)+1;
long int sCode=(myRecord.code)*(myRecord.code);int address=0,F=1;
for(int j=9;j>-1;j--){
myArray[j]=sCode%10;
sCode=sCode/10;
if((j>3) &&(j<7)){
address+=F*myArray[j];
F*=10;
}
}
address*=0.7;
saveF.write((char *)&myRecord,address *( sizeof(myRecord)));
if(i==0)
first=node;
}
}
}
void main(){
myclass d;
d.Get();
}
</prev>

2 solutions

Solution 1

Use XML to store Unicode data. also use CData to to put it into a node.

Posted 22-Jun-11 23:35pm

2irfanshaikh

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Richard MacCutchan · Accepted Answer · 2011-06-23T01:59:00

Solution 3

You are writing a structure (the data of myclass) which contains various integer values by the look of it and expecting to read it as characters. This will never work; you need to read it back into a myclass object and decode the values as appropriate.

Posted 23-Jun-11 1:59am

Richard MacCutchan

Comments

zahraZa 23-Jun-11 13:41pm

thanks a lot,
but i don't want to use .read because user must can read records that saved in file(address of records in the file are random).File saveF must be readable.if i use txt file i should write field by field of my class(true?)if this is true can i access to record by random address ?
i don't know what should to do!!!!! :(
thanks for your help

Richard MacCutchan 24-Jun-11 4:04am

If you want random access then you should not be using streams (continuous stream of bytes) but some ordinary or structured file type. See here for information on using the FILE type in C.