Print all the prime number, between 1 to 100 in C.

#include <stdio.h>


int main()
{
	int num1 , num2 , i , c = 0 ;
	printf("Enter range : ");
	scanf("%d %d" , &num1 , &num2);
	printf("Prime numbers in primes.txt file:\n");

while (num1 < num2)
{
	c =0 ;
	if (num1 <= 1)
	{
		++num1;
		continue ;
	}
	for (i = 2 ; i <= num1/2 ; ++i)
	{
		if (num1%i == 0)
		{
			c =1 ;
			break;
		}
	}
	if(c == 0 )
	{
		printf("%d " , num1);
	}
	
	++num1 ;
	
	
}
printf("\n");
return 0 ;
	
}