problem in fscanf with reading the data

I have a text file fidr = fopen('..\source\real_input.txt','r'); and I have used xreali=fscanf(fidr,'%d'); to read it. fidr contains '-1'. My error is Error using fscanf Invalid file identifier. Use fopen to generate a valid file identifier. Error in line xreali=fscanf(fidr,'%d'); Thank you!

Answer 1

[Walter Roberson]

The problem is in your fopen(). That filename was not found, or you did not have permission to open the file. You can get more information by using the two-output version of fopen:

[fidr, status] = fopen('..\source\real_input.txt', 'r');
if fidr < 0
  fprintf(2, 'fopen failed because %s', status);
end

[Rutika Titre]

Hello Sir, Thank u for your answer. I had got its solution it was a very silly mistake I had made. Thank You!