Write a program that uses a function to check whether a given year is a leap year or not.

C Programming Language Function in C Language (Article) Function in C Language (Program)

908

---

Program:

<span class="pln">
</span><span class="com">#include</span><span class="pln"> </span><span class="str">&lt;stdio.h&gt;</span><span class="pln">

</span><span class="kwd">int</span><span class="pln"> leap_yr</span><span class="pun">(</span><span class="kwd">int</span><span class="pun">);</span><span class="pln">
</span><span class="kwd">int</span><span class="pln"> main</span><span class="pun">(</span><span class="kwd">void</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"> year</span><span class="pun">,</span><span class="pln"> yes</span><span class="pun">;</span><span class="pln">
	printf</span><span class="pun">(</span><span class="str">"\n Enter the Year: "</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">year</span><span class="pun">);</span><span class="pln">
	yes</span><span class="pun">=</span><span class="pln">leap_yr</span><span class="pun">(</span><span class="pln">year</span><span class="pun">);</span><span class="pln">
	</span><span class="kwd">if</span><span class="pun">(</span><span class="pln">yes</span><span class="pun">)</span><span class="pln">
		printf</span><span class="pun">(</span><span class="str">"\n It is a leap year"</span><span class="pun">);</span><span class="pln">
	</span><span class="kwd">else</span><span class="pln">
		printf</span><span class="pun">(</span><span class="str">"\n It is NOT a leap year"</span><span class="pun">);</span><span class="pln">
	</span><span class="kwd">return</span><span class="pln"> </span><span class="lit">0</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"> leap_yr</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> yr</span><span class="pun">)</span><span class="pln">
</span><span class="pun">{</span><span class="pln">
	</span><span class="kwd">if</span><span class="pun">((</span><span class="pln">yr</span><span class="pun">%</span><span class="lit">4</span><span class="pun">==</span><span class="lit">0</span><span class="pun">)&amp;&amp;(</span><span class="pln"> yr</span><span class="pun">%</span><span class="lit">100</span><span class="pun">!=</span><span class="lit">0</span><span class="pun">)||</span><span class="pln">yr</span><span class="pun">%</span><span class="lit">400</span><span class="pln"> </span><span class="pun">==</span><span class="lit">0</span><span class="pun">)</span><span class="pln">
			</span><span class="kwd">return</span><span class="pln"> </span><span class="lit">1</span><span class="pun">;</span><span class="pln">
	</span><span class="kwd">else</span><span class="pln">
			</span><span class="kwd">return</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln">

</span><span class="pun">}</span><span class="pln">
 </span>

Output:

 Enter the Year: 2100

 It is NOT a leap year
 

Explanation:

---

---