Input and help with if-else structure

I am attempting to write a code using an if else statement shown below. I was curious as to why matlab outputs an error (also shown below) when the number of characters don't match each other for the variable "today". The program code runs if the number of characters where equivalent for both "today" variables but otherwise the program won't run. Any clue as to why this occurs and how I can solve this problem? Thank you. I was also attempting to make it so that the user can input the weather via an input statement asking 'What is the weather like today?' and then having the program run.

%%

today = 'snow day'

if today == 'sunny day'

    disp('YAY :)')
else 
    disp('I wish it were sunny :(')

Error using == Matrix dimensions must agree. end

Answer 1

[Jan]

The== operator compares arrays elementwise. Strings are vectors of type char. When the two operands of == have different numbers of elements, a comparision is not possible, except if one is a scalar.

Use strcmp instead to compare strings:

if strcmp(today, 'sunny day')