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);
}

[john rogers]

I tried the code and it works fine as the data goes into the file looks the same as what is on the screen. There is only the numeric data, no text, if that is what you want? I used Microsoft Devstudio 6.0 and it went fine?