There are many times when we need to ask the computer if two variables contain an "equal" value (e.g., x == y), or if one variable contains a value equal to a known constant (e.g., x == 5). Equality is represented in the program using the DOUBLE EQUAL signs operator. The Equality operator (==) should not be confused with the assignment operator.
To test if two variables contain equal values, we use the == notation. Here is an example:
x = input('Person 1, give me a number: ');
y = input('Person 2, give me a number: ');
if ( x == y )
fprintf('You both think alike!\n');
end
