Write a program in C that uses a function to find the average age of students of a class chosen for a junior quiz competition.

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

2380

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Program:

<span class="com">#include</span><span class="pln"> </span><span class="str">&lt;stdio.h&gt;</span><span class="pln">
</span><span class="com">#define</span><span class="pln"> SIZE </span><span class="lit">50</span><span class="pln">

</span><span class="kwd">float</span><span class="pln"> avg_age</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> </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"> i</span><span class="pun">,</span><span class="pln">b</span><span class="pun">[</span><span class="pln">SIZE</span><span class="pun">],</span><span class="pln">n</span><span class="pun">;</span><span class="pln">
	</span><span class="kwd">float</span><span class="pln"> average</span><span class="pun">;</span><span class="pln">
	printf</span><span class="pun">(</span><span class="str">"\n How many students are in the team:\n"</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">
	printf</span><span class="pun">(</span><span class="str">"\n Enter the age of students in the team:\n"</span><span class="pun">);</span><span class="pln">
	</span><span class="kwd">for</span><span class="pun">(</span><span class="pln">i</span><span class="pun">=</span><span class="lit">0</span><span class="pun">;</span><span class="pln">i</span><span class="pun">&lt;</span><span class="pln">n</span><span class="pun">;</span><span class="pln">i</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">b</span><span class="pun">[</span><span class="pln">i</span><span class="pun">]);</span><span class="pln">
	average</span><span class="pun">=</span><span class="pln">avg_age</span><span class="pun">(</span><span class="pln">b</span><span class="pun">,</span><span class="pln">n</span><span class="pun">);</span><span class="pln">
	printf</span><span class="pun">(</span><span class="str">"\n the average age of students =%f"</span><span class="pun">,</span><span class="pln"> average</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">float</span><span class="pln"> avg_age</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> a</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">
</span><span class="pun">{</span><span class="pln">
	</span><span class="kwd">int</span><span class="pln"> j</span><span class="pun">;</span><span class="pln">
	</span><span class="kwd">float</span><span class="pln"> sum</span><span class="pun">=</span><span class="lit">0.0</span><span class="pun">;</span><span class="pln">
	</span><span class="kwd">for</span><span class="pun">(</span><span class="pln">j</span><span class="pun">=</span><span class="lit">0</span><span class="pun">;</span><span class="pln">j</span><span class="pun">&lt;</span><span class="pln">n</span><span class="pun">;</span><span class="pln">j</span><span class="pun">++)</span><span class="pln">
		sum</span><span class="pun">=</span><span class="pln">sum</span><span class="pun">+</span><span class="pln">a</span><span class="pun">[</span><span class="pln">j</span><span class="pun">];</span><span class="pln">
	</span><span class="kwd">return</span><span class="pln"> sum</span><span class="pun">/</span><span class="pln">n</span><span class="pun">;</span><span class="pln">
</span><span class="pun">}</span><span class="pln">
 </span>

Output:

 How many students are in the team:
2

 Enter the age of students in the team:
20
21

 the average age of students =20.500000
 

Explanation:

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