CS 1112 Lecture Notes - Lecture 2: Double-Precision Floating-Point Format
26 Aug 2017
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To get input: var = input("enter whatever: "); pi is a built in variable. Trig functions are built-in (using radians) functionname(argument, argument, etc) Script execution: a sequence of statements in an m-file A variable is a finite named computer memory space for storing a value. Must start with a letter but can contain digits. By default a number is a double, not an int. Double precision refers to how much memory is used (64 bits) Doubles can be casted to ints to use less memory. Value can be displayed using layout option with types/class/bytes/etc (see options) Assignment is putting a value into a variable (operator: =) Ex. r=2*4+5 (read: r gets 2 times 4 plus 5) Right hand side evaluated first then assigned to left. Variables must be defined and initialized before they can be referenced. Also fprintf("id %f inches\n", x) with if needed many variables. "\n" is the escape sequence for new line.
