Recursion in C with factorial program | C Programming in tamil | Logic First Tamil

Recursion explained easily with factorial example. What happens in the background when a recursive call is made is explained in detail.

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[naveenkarthik]

I am a biology student but now studying mechanical engineering. I don't have any such a basic knowledge of programming. So, I feel very hard to understand the programmes and coding. After watching this video, I am very clear i. Recursion topic. Thanks

[shanmugamadhavan]

Fantastic Mam...!!!! Great Job


Thanks Lot

[nithyakiruba]

Very clear explanation mam. Very very thank you mam

[Infinityy]

Hi sister.Can you show how to do fibonacci like factorial?

[harishharish]

Ma'am how to student mark recursion vachu yepadi program pannadhu if goto illa ma

[taeya]

In that main function, if we gave it as int main... then we have to write return 0 at the end or not?

[livin]

#include<stdio.h>
int checkForPrime(int);
int i;

int main()
{
int n1, primeNo;
printf("\t Recursion : Check a number is prime number or not :\n");
printf(" Enter any number : ");
scanf("%d", &n1);
i = n1/2;
primeNo = checkForPrime(n1);
if(primeNo==1)
printf(" The number %d is a prime number. \n", n1);
else
printf(" The number %d is not a prime number. \n", n1);
return 0;
}
int checkForPrime(int n1)
{
if(i==1)
{
return 1;
}
else if(n1 % i == 0)
{
return 0;
}
else
{
i = i - 1;
checkForPrime(n1);
}
}
mam i have a doubt in this code. i understoood the use of i in this code. But, what is logic behind "i=n1/2".