how to input in matlab

ask the user for three numbers in the form of a vector,[a b c].then tell the user the number of real-valued roots there are for the equation y=a*x^2+b*x+c having the user's values for a,b,c.

Answer 1

[Youssef Khmou]

you can use input instead of fscanf, and enter scalar, vector or matrix :

a=input(' Player 1: ');

Answer 2

[Image Analyst]

See the example for inputdlg() in the help for that function.