Computer Science 1026A/B Chapter Notes - Chapter 5: Local Variable, Stochastic Process

• School: Western University
• Department: Computer Science
• Course: Computer Science 1026A/B
• Professor: Professor Ola

Document Summary

Device with given specification but unknown implementation: e. g. we know round function rounds to x number of decimal places but we don"t know how. Function: sequence of instructions with a name. Call a function in order to execute its instructions. E. g. you call round function, the instructions of round function executes & computes the results since it returns its result back to where the function was called & program resumes execution. Arguments are supplied when function is called (values for which we want the function to compute a result: inputs when calling a function. Output: return value price = round(6. 8275, 2: e. g. when round function returns its results, the return value is stored in the variable price. Functions can receive multiple arguments (instructions) but can only return one value. Functions don"t need arguments: e. g. random function requires no argument to produce random number. Do not confuse return value with print statement. Whereas return value can be stored for future uses.