Virtual Study Solutions: program to find factorial of a number

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<span style="font-family: "verdana" , sans-serif;">Write C++ Program to find factorial of Number.</span></h3>
<span style="font-family: "verdana" , sans-serif;">Today we will learn How to Find factorial of Number Using C++ Program.<br />But First of All lets discuss what is a Factorial. it is denoted by n!</span><br />
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<span style="font-family: "verdana" , sans-serif;"><b>Also Read:</b> <a href="http://virtualstudysolutions.blogspot.com/2017/02/how-to-write-c-program-to-find-Fibonacci-Series.html">How to write C++ program to find Fibonacci Series</a></span><br />
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<span style="font-family: "verdana" , sans-serif;">What is a Factorial ? </span></h3>
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<span style="font-family: "verdana" , sans-serif;"> The factorial of a number 'n' is the product of all number from 1 up-to the number 'n'<br /><br /><b>it is denoted by n!</b>.  For example n=5 then factorial of 5 will be 1*2*3*4*5= 120. 5!= 120</span></div>
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<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "verdana" , sans-serif;"> Code of++ Program to find factorial of Number</span></td></tr>
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<span style="font-family: "verdana" , sans-serif;">Factorial program in C++ Logic:</span></h3>
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<li>First think what is the factorial of a number? </li>
<li>How mathematically it can be calculated?</li>
<li>If you understand it now then it will be very easier to make a C++ Program logic to find the factorial.</li>
<li>User enters a number and we have to multiply all numbers up-to entered number.</li>
<li>Like if user enters 6  then Factorial should be equal to factorial= 1*2*3*4*5*6.</li>
<li>In this case a for Loop will be very helpful. It will start from one and multiply all numbers up-to entered number after it loop will be terminated.</li>
<li>Take a variable and initialized it to 1 and in loop store multiplication result into it like in below program a variable </li>
<li>Factorial is used for this purpose.what is we does not initialized it to 1 and initialized it to zero or remain it uninitialized. In case of 0 our result will be zero in case of any number entered</li>
<li>In case of not initializing it our answer will correct mostly but if variable contains garbage value then we will not be able to get correct result. </li>
<li>It is recommended that to initialize it to one.</li>
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<span style="font-family: Verdana, sans-serif;"><b>Also Read:</b> <a href="http://virtualstudysolutions.blogspot.com/2017/03/how-to-write-c-program-to-find-prime-number.html">How to Write C++ Program to Find Prime Number</a></span><span style="font-family: verdana, sans-serif;"><br /></span><div>
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<span style="font-family: verdana, sans-serif;">C++ Program to find factorial of Number</span></h3>
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<span style="font-family: "verdana" , sans-serif;"><br />#include<iostream><br /><br />using namespace std;<br /><br />int main()<br /><br />{<br /><br />    int num,factorial=1;<br /><br />    cout<<" Enter Number To Find Its Factorial:  ";<br /><br />    cin>>num;<br /><br />    for(int a=1;a<=num;a++)<br /><br />    {<br /><br />        factorial=factorial*a;<br /><br />    }<br /><br />cout<<"Factorial of Given Number is ="<<factorial<<endl;<br /><br />    return 0;<br /><br />}</span><span style="font-family: Verdana, sans-serif;"><br /><b>Also Read:</b> <a href="http://virtualstudysolutions.blogspot.com/2017/02/how-to-write-c-program-to-find-factorial-of-Number.html">How to write C++ Program to find factorial of Number</a></span><br />
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How to write C++ Program to find factorial of Number

Write C++ Program to find factorial of Number. Today we will learn How to Find factorial of Number Using C++ Program. But First of All le...

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