Write a program to illustrate the results of type conversion between float to int data type.

C Programming Language Data Types in C Language (Article) Data Types in C Language (Program)

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Program:

<span class="com">/*
 Program:  Write a program to illustrate the results of type conversion
  between float to int data type. 
  
 Author: www.atnyla.com  
 
*/</span><span class="pln"> 

</span><span class="com">#include</span><span class="pln"> </span><span class="str">"stdio.h"</span><span class="pln">  
</span><span class="kwd">int</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">double</span><span class="pln"> x</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">
i </span><span class="pun">=</span><span class="pln"> </span><span class="lit">1400</span><span class="pun">;</span><span class="pln">
x </span><span class="pun">=</span><span class="pln"> i</span><span class="pun">;</span><span class="pln">             </span><span class="com">/* conversion from int to double */</span><span class="pln">

printf</span><span class="pun">(</span><span class="str">"x = %10.6le i = %d\n"</span><span class="pun">,</span><span class="pln">x</span><span class="pun">,</span><span class="pln">i</span><span class="pun">);</span><span class="pln">
x </span><span class="pun">=</span><span class="pln"> </span><span class="lit">14.999</span><span class="pun">;</span><span class="pln">
i </span><span class="pun">=</span><span class="pln"> x</span><span class="pun">;</span><span class="pln">             </span><span class="com">/* conversion from double to int */</span><span class="pln">

printf</span><span class="pun">(</span><span class="str">"x = %10.6le i = %d\n"</span><span class="pun">,</span><span class="pln">x</span><span class="pun">,</span><span class="pln">i</span><span class="pun">);</span><span class="pln">

x </span><span class="pun">=</span><span class="pln"> </span><span class="lit">1.0e+60</span><span class="pun">;</span><span class="pln">       </span><span class="com">/* a LARGE number */</span><span class="pln">
i </span><span class="pun">=</span><span class="pln"> x</span><span class="pun">;</span><span class="pln">             </span><span class="com">/* won't fit - what happens ?? */</span><span class="pln">

printf</span><span class="pun">(</span><span class="str">"x = %10.6le i = %d\n"</span><span class="pun">,</span><span class="pln">x</span><span class="pun">,</span><span class="pln">i</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>

Output:

x = 1.400000e+003 i = 1400
x = 1.499900e+001 i = 14
x = 1.000000e+060 i = -2147483648
Press any key to continue . . .

Explanation:

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