CODEWITHSUNDEEP
arrayslisttextdoublereadline
Fateme Shirmohammadi
Fateme Shirmohammadi

Reputation: 73

Read double numbers from a text file

I have a text file and it this file I have something like this:

0.003 0.4 6
0.004 0.002 54
0.007 0.001 6

I need to read these numbers from text file and save them in a array or list like follow:

0.003 0.4 6
0.004 0.002 54
0.007 0.001 6

For Example if the Array name is myArray and I need to have some thing like this

myArray[0,0,0]=0.003

I found some methods which can read double from a text file but in all of them, the array will be like this

myArray=[0.003;0.4;6;0.004,0.002;54;....]

what should I do? Please help me, I am a beginner in programming.

Upvotes: 0

Views: 171

Answers (1)

user1785900
user1785900

Reputation:

your program will read one number in each loop round .. so make two counters one for rows and the other one for columns, and increment columns counter each time u read one number, till u exceed number 3 .. then reset it to 0 and increment the row counter .. check out this code:

double array[3][3];
int i = 0, j = 0;
double num;
num = inFile.readline();
while ( !inFile.eof() )
{
    array[i][j] = num;
    if ( j == 2 ) // check if its last element in row i
    {
        i++; // move to row i+1 in array
        j = 0; // reset index to first element in row
    }
    else
        j++; // move to next element in array

    num = inFile.readline();
}

Upvotes: 1

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