Program to reverse a given number

C Programming Language Loop control in C Language (Article) Loop control in C Language (Program)

1389

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Program:

<span class="com">#include</span><span class="str">&lt;stdio.h&gt;</span><span class="pln">
</span><span class="kwd">void</span><span class="pln"> main</span><span class="pun">()</span><span class="pln">
</span><span class="pun">{</span><span class="pln">
</span><span class="kwd">int</span><span class="pln"> n</span><span class="pun">,</span><span class="pln">a</span><span class="pun">,</span><span class="pln">r</span><span class="pun">=</span><span class="lit">0</span><span class="pun">;</span><span class="pln">
 
printf</span><span class="pun">(</span><span class="str">"enter any no to get its reverse: "</span><span class="pun">);</span><span class="pln">
scanf</span><span class="pun">(</span><span class="str">"%d"</span><span class="pun">,&amp;</span><span class="pln">n</span><span class="pun">);</span><span class="pln">
	</span><span class="kwd">while</span><span class="pun">(</span><span class="pln">n</span><span class="pun">&gt;=</span><span class="lit">1</span><span class="pun">)</span><span class="pln">
	</span><span class="pun">{</span><span class="pln">
	a</span><span class="pun">=</span><span class="pln">n</span><span class="pun">%</span><span class="lit">10</span><span class="pun">;</span><span class="pln">
	r</span><span class="pun">=</span><span class="pln">r</span><span class="pun">*</span><span class="lit">10</span><span class="pun">+</span><span class="pln">a</span><span class="pun">;</span><span class="pln">
	n</span><span class="pun">=</span><span class="pln">n</span><span class="pun">/</span><span class="lit">10</span><span class="pun">;</span><span class="pln">
	</span><span class="pun">}</span><span class="pln">
printf</span><span class="pun">(</span><span class="str">"reverse=%d \n"</span><span class="pun">,</span><span class="pln">r</span><span class="pun">);</span><span class="pln">
 
</span><span class="pun">}</span>

Output:

enter any no to get its reverse: 123
reverse=321
Press any key to continue . . .

Explanation:

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