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block checks if the chosen key is pressed by the user. If true, then it
executes a set of blocks, else executes another set of blocks.
Let us create a small script to understand the working of sensing blocks.
Sensing an Input
To add sensing blocks to the script, follow the given steps:
Step 1: Click on the Sensing block
category.
Step 2: Insert a sprite, Penguin2 on the
stage. Delete the cat sprite.
Step 3: Add a new backdrop, Arctic to
the stage. 1
Step 4: Now drag the ask block to the
script area. Click on the block.
A speech bubble appears 2
above the penguin with the
text, “What’s your name?”.
You will also see an input box on the stage with a blinking cursor. You will notice that
the input box waits for your input. Once you type it, your name will appear in the box.
When you click the tick button or press Enter, the name will disappear.
Step 5: To display the typed name also, click on the check box before the answer block. The
answer appears on the stage.
4
5
3
You can also place the answer block in the say block. It will look something like this.
Conditional Blocks in Scratch 99

