CODEWITHSUNDEEP
arraysc
daf
daf

Reputation: 81

Can arrays store multiple values in a single index in C?

I have an assignment that requires us to read a CSV file, and store each row of data in a single index in a double array. However, unless I'm mistaken, it's not possible to store multiple values in a single index in an array in C. Instead, I would have to use a struct for that.

Can anyone confirm if it is possible store multiple values in a single index in an array in C?

Here is the input CSV file:

1.5,-1.5,3
-1,1.5,3
1,-1,7
1,1,3
-1.5,-1.5,3
-1,0.5,3
0.5,0.5,3
-1,-1,8
-3,1,8
-1.7,1,8
1.8,1,0

eg. for the first line, can I store 1.5 and -1.5 and 3 in array[0]?

Upvotes: 0

Views: 1028

Answers (1)

John Bode
John Bode

Reputation: 123558

You’ll want to use a 2-dimensional array:

#define ROWS 9
#define COLS 3
...
double data[ROWS][COLS];

and read each row as

if ( fscanf( input, "%lf,%lf,%lf", &data[i][0], &data[i][1], &data[i][2] ) != 3 )
{
  // error during input, handle as appropriate
}

Thus, each data[i] is itself a 3-element array of double.

Upvotes: 1

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