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added a parsons problem to section 3.3 for loops #360

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added a parsons problem to section 3.3 for loops #360

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41 changes: 41 additions & 0 deletions pretext/Control_Structures/for_loop.ptx
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Expand Up @@ -111,6 +111,47 @@ int main() {
</choices>

</exercise>

<exercise xml:id="cpp-for-loop-parsons-exercise" label="cpp-for-loop-parsons">
<statement>
<p>
Construct a C++ program that uses a for loop to print the squares of the numbers
0 through 4, each followed by a space. Drag the blocks into the correct order on the right.
</p>
</statement>
<blocks>
<block order="1">
<cline>#include &lt;iostream&gt;</cline>
<cline>using namespace std;</cline>
</block>

<block order="2">
<cline>int main() {</cline>
</block>

<block order="3">
<choice correct="yes">
<cline> for (int i = 0; i &lt; 5; i++) {</cline>
</choice>
<choice correct="no">
<cline> for (int i = 0; i &lt; 5; i--) {</cline>
</choice>
</block>

<block order="4">
<cline> cout &lt;&lt; i*i &lt;&lt; " ";</cline>
</block>

<block order="5">
<cline> }</cline>
</block>

<block order="6">
<cline> return 0;</cline>
<cline>}</cline>
</block>
</blocks>
</exercise>
</reading-questions>
</subsection>
</section>