Writing to file in c?

finnpark

Hello All,

I am trying to write a [8][61] matrix in c to a file.

FILE* fp;
double warpedresult[NO_OF_COEFF][AVERAGE];
fp = fopen("c0r0.warp", "w+b");        
fwrite(warpedresult, 1, sizeof(warpedresult), fp );
fclose(fp);

warped result is filled with correct values in program. I want to write these values to a file.

It is giving no errors but when I read in file in matlab I am getting rubbish!

Anyone out there know why?

Thanks.

king_of_inismac

k, I think the problem is with your use of fwrite. It seems your argument list is wrong:

The argument list for fwrite is as follows:

The first parameter of fwrite is a pointer to the variable that you want to write to the file. The second parameter is the size of the variable that must e written. The third parameter is the number of variables to be written. The fourth parameter is the file pointer of the file you want to write to.

I think you have the second and third parameter mixed up.

best of luck with it,

Martin

btw: is this a *nun's island* project by any chance?

finnpark

Cheers Martin,

Got it working now.

Yep a "nun's island" job and its rag week :cool: .