Write a C Program to Check Weather a number is Prime or not
![Write a C Program to Check Weather a number is Prime or not Prime Check, Timus Rak, Sumit Kar](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgd7JUeFcGURR9T3358Yzicn60HdqsMSKqXUO3-Sxfx4K5Sqc7UgUwbzWzXCCtqRS4lZ_KrO_J8XbTe1fxRFzDQ-ZO_BYWAYQLuUNCKozi7hAbEpi0FGxITpJhJtEywftgs9V5CX1CA6O8a/s1600/c-programming-tutorial.jpg)
/* Using while loop */
#include<stdio.h>
void main()
{
int a,i,f;
printf("Enter a number: ");
scanf("%d",&a);
f=0;
i=2;
while(i <= a/2)
{
if(a%i == 0)
{
f=1;
break;
}
i++;
}
if(f==0 && a!=1)
printf("Prime Number");
else
printf("Not Prime Number");
}
/* Using for loop */
#include<stdio.h>
void main()
{
int a,i,f;
printf("Enter a number: ");
scanf("%d",&a);
f=0;
for(i=2;i <= a/2;i++)
{
if(a%i == 0)
{
f=1;
break;
}
}
if(f==0 && a!=1)
printf("Prime Number");
else
printf("Not Prime Number");
}
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