Thread: Multidimensional array into function

Thanks guys, I think it was the "type" that got me into trouble. I also used a function in order to read N first

Code:

int findN(FILE* input)
{
int N;
fscanf(input, "%d", &N);
return(N);
}

In terms or my malloc statement, yes I was trying to allocate memory for my array with 3*N space. How should I do this instead?

Code:

ptr = malloc(N*3*sizeof(double));

Also, my code now works for the input I specified in my original post, but now I want to add a description line to it

Code:

    4
description that includes spaces up to 80 characters or less
O   -0.906801    0.569837    0.066005
O    0.956585   -0.258900    0.342064
O   -0.962633    0.494832    0.380356
O   -0.259093    0.292540    0.854958

fscanf will only read to whitespace and I need to read it to a character string but what I tried didn't work...

Code:

char buf[81];

fgets(buf, sizeof buf, input);
printf("Description is %s", buf);

any ideas would be great

Thanks a lot

You can use fgets to get a whole line, or you can use something like:

Code:

fscanf(input, "%[^\n]", buf);

Note, that is untested, so double check against the scanf documentation for usage of %[].

Originally Posted by anduril462

You can use fgets to get a whole line, or you can use something like:

Code:

fscanf(input, "%[^\n]", buf);

Note, that is untested, so double check against the scanf documentation for usage of %[].

I have seen this around but have so far not been able to use it