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#include <stdio.h>
int main()
{
	int number, num, div, count = 0;
	printf("please input integer number > 2\n");
	scanf("%d", &num);
	printf("prime numbers between 2 and %d are : \n", num);
	for(number = 2; number <= num; number++)
	{
		for(div = 2, number % div != 0; div++);
		if(div == number)
		{
			printf("%5d", number);
			if(++count % 10 == 0)
			printf("\n");
		}
	}
	return 0;
}

prog.c: In function ‘main’:
prog.c:10:14: warning: right-hand operand of comma expression has no effect [-Wunused-value]
   for(div = 2, number % div != 0; div++);
              ^
prog.c:10:40: error: expected ‘;’ before ‘)’ token
   for(div = 2, number % div != 0; div++);
                                        ^
                                        ;
prog.c:6:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &num);
  ^~~~~~~~~~~~~~~~~

Standard output is empty