使用指针，标志和函数调用的素数生成器（C）

The program (c code) gets a minimum and maximum value from the user to then determine whether all of the numbers in between are prime or not. If the number is not prime, the program must also tell the user one set of factors of that number. I'm having trouble determining how to work the for loops and then determine what the factors are. My programming knowledge is not very good, so the simple terms would be helpful. Any help is greatly appreciated.The program (c code) gets a minimum and maximum