MATLAB: How to read a text file line by line and store in an array

Question

My text file is like this:-

3

2

3

-1

2

3.5

I'm doing it like this :-

fileID=fopen('sample.txt','r');

formatSpec='%d';

A=[ ];

A=fscanf(fileID,formatSpec,sizeA)

disp(A)

I am assuming array A is created and it is reading byte by byte into A for some reason nothing is printing. Also i need help because it would stop reading at -1 becausr it is a negative value. How can i read different data types ? i want to store them into a array after reading from a file.

Answer 1

Change formatSpec from %d to %f

fileID=fopen('sample.txt','r');
formatSpec='%f';
A=fscanf(fileID,formatSpec)

A =

3.0000

2.0000

3.0000

-1.0000

2.0000

3.5000

Use %c to read (either it is number or string)

fileID=fopen('sample.txt','r');
formatSpec='%c';
A=fscanf(fileID,formatSpec)

A =

'3

2

3

-1

2

3.5'