firstname1,lastname1,month1, month2 , month3 ,  month4firstname2,lastname2  ,  month1,month2     ,month3 ,month4firstname3,       lastname3       ,month1, month2 , month3 ,  month4

firstname1,lastname1,month1,month2,month3,month4firstname2,lastname2,month1,month2,month3,month4firstname3,lastname3,month1,month2,month3,month4

FILE *pFile = fopen("test.txt","r");char szFirstName[16],      szLastName[16],      szMonth1[16],      szMonth2[16],      szMonth3[16],      szMonth4[16];while(!feof(pFile)){   // scan out the fields, ignoring any whitespace and ending on a newline.   fscanf(pFile," %[^, ] , %[^, ] , %[^, ] , %[^, ] , %[^, ] , %s \r\n",      &szFirstName,      &szLastName,      &szMonth1,      &szMonth2,      &szMonth3,      &szMonth4);      // do something with the data.   // I'll just dump it to the console for now.   printf("%s,%s,%s,%s,%s,%s\r\n",      szFirstName,      szLastName,      szMonth1,      szMonth2,      szMonth3,      szMonth4);}fclose(pFile);

Quote:Original post by graveyard filla
I left it running for a few hours and when I came back, my PC was bogged down and it said "The system is low on virtual memory... ".

Quote:Original post by graveyard filla

while looping for hours & hours do   // ....   fields.push_back(buff);   // ....   buff.push_back(c);   // ....   buff.clear();   // ....   fields.clear();

Quote:Original post by Drew_Benton

Quote:Original post by graveyard filla
Drew, from your example of getline(), it doesn't seem to fit with the reference i found for getline()... I'm guessing I should do something like fin.getline(&some_string,999999,"'") ? I put 999999 there because I want it to keep reading untill it finds the deliminator.

Unless you are using VS 6, the code I used for getline should work in dev and vs7. If you notice what I did, I am not using getline for the ifstream class, but rather the std::getline implementation, it is very different [wink].

Quote:Original post by snk_kid
[grin] typically clear for vector/basic_string does not de-allocate memory, it just destroys all elements this is due to efficiency reasons, also push_back for vector/basic_string is typically implementated with exponential-growth strategy [lol].

Don't believe me? do some push backs then clear then push back again and lastly check the results of std::vector/basic_string::size and std::vector/basic_string::capacity, capacity will be greater than size.

Quote:Original post by DrEvil

Quote:Original post by snk_kid
[grin] typically clear for vector/basic_string does not de-allocate memory, ...

Just FYI, In VC++ 7.1 vector.clear() frees the memory, that is, size() and capacity() end up being zero.

#include <cmath>#include <algorithm>#include <iterator>#include <vector>#include <string>#include <iostream>struct foo { int i; foo(int j = 0): i(j) {} };int main() {   std::vector<foo> f;	   std::generate_n(std::back_inserter(f), 15, std::rand);   f.clear();   std::cout << "before vector: capacity = " << f.capacity() << ", size = " << f.size();   std::generate_n(std::back_inserter(f), 5, std::rand);   std::cout << "\nafter vector: capacity = " << f.capacity() << ", size = " << f.size();   std::string s;   s.push_back('a');   s.push_back('b');   s.push_back('c');   s.push_back('d');   s.clear();   std::cout << "\n\nbefore string: capacity = " << s.capacity() << ", size = " << s.size() << std::endl;   s.push_back('a');   s.push_back('b');   std::cout << "after string: capacity = " << s.capacity() << ", size = " << s.size() << std::endl;}

Quote:Original post by pragma Fury
Except.. his char buffer will eventually reach the size that it's capacity won't need to be increased anymore. And his field buffer will always be 15 elements in size.

Quote:Original post by pragma Fury
I don't see the leak here. though I'm running VC7.1, so maybe I'm missing it.

Quote:Original post by snk_kid

Quote:Original post by pragma Fury
I don't see the leak here. though I'm running VC7.1, so maybe I'm missing it.

I never said it was going leak memory.

Quote:Original post by ToolmakerThe best approach is to read line by line(I assume each line is going to contain 1 customers data), shove to the database, clear the buffers(Or even better, make them local in a compound statement so the destructors handle it for you).

Quote:Original post by DrEvil
I'm not sure if your example was an attempt to prove me wrong or not, but add a cout after the f.clear() and capacity and size will be 0 in VC7.1, as I originally posted.

vector.clear() free's the buffer(capacity and size go to 0)
string.clear() doesn't free the buffer