Write C a program to show that when arrays or strings are passed to a function, call by value mechanism is not followed.

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

749

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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"> change</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> </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"> arr</span><span class="pun">[</span><span class="lit">3</span><span class="pun">]</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="pun">{</span><span class="lit">1</span><span class="pun">,</span><span class="pln"> </span><span class="lit">2</span><span class="pun">,</span><span class="pln"> </span><span class="lit">3</span><span class="pun">};</span><span class="pln">
	change</span><span class="pun">(</span><span class="pln">arr</span><span class="pun">);</span><span class="pln">
	printf</span><span class="pun">(</span><span class="str">"Elements are %d, %d, and %d.\n"</span><span class="pun">,</span><span class="pln"> arr</span><span class="pun">[</span><span class="lit">0</span><span class="pun">],</span><span class="pln"> arr</span><span class="pun">[</span><span class="lit">1</span><span class="pun">],</span><span class="pln"> arr</span><span class="pun">[</span><span class="lit">2</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">void</span><span class="pln"> change</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> my_array</span><span class="pun">[])</span><span class="pln">
</span><span class="pun">{</span><span class="pln">
	my_array</span><span class="pun">[</span><span class="lit">0</span><span class="pun">]</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="lit">10</span><span class="pun">;</span><span class="pln">
	my_array</span><span class="pun">[</span><span class="lit">2</span><span class="pun">]</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> </span><span class="lit">20</span><span class="pun">;</span><span class="pln">
	</span><span class="kwd">return</span><span class="pun">;</span><span class="pln">
</span><span class="pun">}</span><span class="pln">
 </span>

Output:

Elements are 10, 2, and 20.

 

Explanation:

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