# Lcm of Prime Factor in C

Learn how to Calculate the Lcm of Prime Factor in C, and Also display all Prime number. Actually, how works the Factorization process. For example, you have a number:- 5.

Let how factorial work for solving(converting in descending order).:-5 >4>3>2>1

Now time to showing the Factorial result(Multiply all the factor with each other):- 5 *4*3*2*1

And Prime number you can find Easily (In factor):-5,4,3

## Use Prime Factorization to Find LCM in C

#include <stdio.h>
int main()
{
int n,j,Prime, i,fact=1,LCM;
printf(“Enter an integer: “);
scanf(“%d”, &n);
if (n < 0)
printf(“Error“);
else

{
for (i = 1; i <= n; ++i)

{
fact *= i;
}
printf(“Factorial of %d = %d\n“, n, fact);
}
printf(“All Prime Factors of %d are: \n“, n);
for(i=2; i<=n; i++)
{
if(fact%i==0)
Prime = 1;
for(j=2; j<=i/2; j++)
{
if(i%j==0)
{
Prime = 0;
break;
}
}
if(Prime==1)
{
printf(“%d, “, i);
}
}
return 0;
}

1st Run

2nd Round

## C program to find Lcm of Prime Factor

END

C program to draw a square using graphics (clickHere)

Note:- Maybe sometime above code doesn’t get user-friendly output, in codeblock ‘or’ any other EDITOR, All of C & C++ program tested in DOS compiler Turbo C.

## Types of functions in C    Read Here

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