User Input

User Input

By Jose Jaramillo

Programs

User Interaction

Programs are more fun when we can get input from the user.

Open Ended

What kind of input can we get from the user?

Getting User Input

Code

readLine(prompt)

​

readInt(prompt)

​

readFloat(prompt)​

readLine

To read strings from the user, use readLine

var name = readLine("Enter name: ");

println(name);​

readInt

To read integers from the user, use readInt

var age = readInt(

readFloat

To read floats from the user, use readFloat

var cost = readFloat("Enter cost: ");

println(cost);​

Multiple Choice

What function do you need to call to ask the user of the program to enter text?

• readLine

• readln

• text

• println

Multiple Choice

To ask the user of the program for a number, which function should you use?

• readLine

• readInt

• readFloat

• Both readInt and readFloat are for numbers.

Open Ended

What is the following code going to print?

var name = readLine("What is your name? ");

println("Hello " + name + ", nice to meet you!");

Open Ended

What is the following code going to print?

var age = readInt("What is your age? ");

println("You are " + age + " years old.");