OT - C++ question. Options

[Jeff Krieger]

Does anyone know how to modify this small program that I wrote in C++ so that for every cout statement there is a statement that writes the exact same information to the file accelfig.txt? I use this program to generate acceleration values and write them to accelfig.txt and then I read these acceleration values into another program that I wrote that numerically integrates these figures to calculate 0 to 60 mph and 1/4 mile times, speed at the end of the 1/4 mile, maximum hp, 60 mph to 0 braking distance etc. I use the free C++ compiler from http://www.bloodshed.net/dev/devcpp.html .


//CalcAccl1

#include < iostream.h >
#include < stdio.h >

// This program calculates 30 seconds worth of acceleration values, assumed
// to be in ft/s^2, and writes them to the file accelfig.txt.

main()
{ FILE *fp;

int counter;

double acceleration = 0, time = 0;

fp = fopen("accelfig.txt", "w");

for (counter = 0; counter <= 1600; counter++)
{
acceleration = time + 10;
fprintf(fp, "%20.10f\n", acceleration);
cout << "\nThe acceleration at " << time << " seconds is " << acceleration << '\n';
time = time + 0.0025;
}

for (counter = 1601; counter <= 4800; counter++)
{
acceleration = 14;
fprintf(fp, "%20.10f\n", acceleration);
cout << "\nThe acceleration at " << time << " seconds is " << acceleration << '\n';
time = time + 0.0025;
}

for (counter = 4801; counter <= 12000; counter++)
{
acceleration = 62 - 4*time;
fprintf(fp, "%20.10f\n", acceleration);
cout << "\nThe acceleration at " << time << " seconds is " << acceleration << '\n';
time = time + 0.0025;
}


fclose(fp);
}