Write the names of the following compounds :
`H-underset(H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)(C)-overset(H)overset(|)(C)--=C-H``

Explanation

To name the given compound, we will follow the IUPAC naming conventions step by step.

### Step 1: Identify the Parent Chain
The first step in naming the compound is to identify the longest continuous carbon chain. In this case, we can see that there are 4 carbon atoms in the longest chain.

**Hint:** Look for the longest chain of carbon atoms without breaking the sequence.

### Step 2: Identify Functional Groups
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