How to use fprintf for writing data to a file

Question

I want to write data from a C program to a file, so that Excel can read the file to plot a graph of the data. But I\'m not sure of the exact syntax to use for fprintf. I have st

Answer 1

Your logic should look something like this:

fp = fopen( "out_file.txt", "w" ); // Open file for writing

while ( some condition )
{

    ... some calculations

    fprintf(fp, "x = %f, y = %f, vx = %f, vy = %f, time = %f, ", x,y,vx,vy,time);
}

fclose(fp);

Answer 2

The stdio file type is FILE (all uppercase).

Answer 3

#include <stdio.h>

should be enough, but be careful because the structure's name is FILE (all uppercase) and not File. Finally, dont forget to close the file calling fclose()