vector can't display full size

[sail456852]

Displays only part of the vectors

  #include <iomanip>
#include <iostream>
#include <vector>
#include <math.h>

using std::cin;
using std::cout;
using std::endl;
using std::vector;

vector<int>   source;
vector<double>  square;
typedef vector<int>::size_type vi_t ;

int main()
{

    for(int i = 0; i < 1000 ; i++)
    {
        source.push_back(i);
        square.push_back(sqrt(i));
    }

    for(vi_t i = 0; i < 1000 ; i++)
        cout << source[i] <<std::setw(20) << square[i] << endl;


}

It supposed to display from vector[0] to vector[999] .total 1000 elements per column .
but actually it only displays from vector[704] to vector[999]
What's wrong with my code ? There is no compile error either ...

[sail456852]

I am using the newest version CodeBlocks

[firedraco]

I'm betting that your console isn't storing all of the history (I'm guessing it stores ~300 lines). Try piping the output to a file and looking at it that way, or waiting every 100 or so lines.

[cire]

It displays them all, but your console only keeps so many lines to display. Write your output to a file instead if you need to see it all.

[sail456852]

Okay ,I will have a try , and let you know , I don't know how to output file in C++ ,hope it will be same as in C ...

[sail456852]

    std::ofstream myfile;
    myfile.open ("Acceleratedcpp.txt");

    for(vi_t i = 0; i < 1000 ; i++)
        myfile << source[i] <<std::setw(source.size()/100) << square[i] << endl;

It works !
Thanks !

[sail456852]

But
Why didn't the console display them all ?
What if I want display them all ?
What's the theory behind the scene ?

[helios]

You can't put 2 liters of water in a 1 liter bottle. You can't display a thousand lines in a screen that's 25 lines tall. If you need to display more at once then you can't use the console. It's as simple as that.

[E0p9LyTq]

The console did display every line of text, the earlier lines just were pushed out of the console buffer by the later lines.

If you want a quick way to write your output to a file simply redirect it.

Open a console window, and execute your program, for example:

myprogram.exe > test.txt