Check prime number up to n

     Check prime number up to n:-

#include<stdio.h>
main()
{ 
int num,i,count,n;
printf("Enter max range: ");
scanf("%d",&n);
for(num = 1;num<=n;num++)
{ 
count = 0;
for(i=2;i<=num/2;i++)
{
if(num%i==0)
{
count++;
break;
}
}
if(count==0 && num!= 1)  
printf("%d ",num);
}
return 0;
}