Display Message while program is processing?

[micro13989]

While the program is processing I am wondering if there is a way to display a message that says system processing?




#include<cmath>
#include<iostream>
#include<fstream>
#include<string>

using namespace std;

int main ()
{
double d, d2, y, r, x, x2, y2, z2,x1, y1, z1, NOL1, NOL2, dump;
string filename1, filename2;

ifstream zone1, zone2;

cout << "Enter name of input file:";
cin >> filename1;

zone1.open(filename1.c_str());

cout << "Enter name of input file:";
cin >> filename2;

zone2.open(filename2.c_str());

if(zone1.fail())
{
cerr << "Error opening input files\n";
exit(1);
}

if(zone2.fail())
{
cerr << "Error opening input files\n";
exit(1);
}

zone1 >> NOL1;
zone2 >> NOL2;

d2 = 999999999; //double d_2 =MaxVal(99999999)(DBL_MAX);

for(int i = 1; i <= NOL1; i++)
{
zone1 >> x1 >> y1 >> z1;

for(int j = 1; j <= NOL2; j++)
{
zone2 >> x2 >> y2 >> z2;

d = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2) + pow(z2 - z1, 2));

if (d < d2)
{
d2 = d;
}
}

zone2.close();
zone2.open(filename2.c_str());

zone2 >> dump;
}

zone1.close();
zone2.close();

cout << "The shortest distance is: " << d2 << endl;

system("pause");
return 0;

}

[writetonsharma]

just before the processing starts, you can print a message ? Or do you want something else ?

always put code between code tags. see right side format panel.

[micro13989]

While the program is going through the iterations of the loop instead of just pausing I would like it to print something like system processing, wondering how to do that?

[Duthomhas]

If you can calculate the percentage of processing done, you can print that in the loop.

Otherwise, you can print a 'spinner', overwriting the characters \ | / - in order.

Use cout << "\r" << percent_done << "%" << flush; to do it.

You might also want to consider a timer, so you only output something after a reasonable amount of time has passed, instead of too quickly.

Hope this helps.