Thread: Generating data file names from program variables

Hi Everybody,

I am writing a C program for numerical scheme. Now, based on the input parameter, I am trying to generate data file name. For example, suppose grid size defined by N is 50 i.e. N = 50, and if I can include this grid size in the data file e.g. ums_50.dat, then as we change the parameters, they will automatically be reflected in the file name. Let's say we make N = 60, then code should generate file ums_60.dat and so on.

We can also have more than one parameters in the file name. I did write a code which is a bit involved and not giving desired output.

Any relevant suggestions will be appreciated.

Thanx in advance.

Maverick

Hi Vart,
That was really simple. Getting the required results.
Thank you so much.
Here's a snippet I quickly wrote using sprintf().

Code:

    int     N,i,j;
    char    string[50];
    double  lambda;
    N       = 100;
    i       = 10;
    j       = 20;
    lambda  = 0.01;
    sprintf( string, "i=%d_j=%d_N=%d_lambda=%0.3f.dat", i,j,N,lambda);
    fp1 = fopen( string, "w" );

Output:
i=10_j=20_N=100_lambda=0.010.dat