Thread: using arrays to sort numbers

i'm having problems with writing a program using arrays. i have to get the program to print out all the prime numbers up to 500. I'm using if/else statements and for loops but all i'm getting in return is 0 when i run the program. What am i doing wrong.

Here's a sample of my work:
for(digit=2; digit<=500; digit++)
{
if(digit*2 != digit)
PrimeNum[digit]
}

it doesn't look like your doing it right cause you aren't assigning anything to the array. You will probably have to use a nested loop. Probably something of this sort


int array = 500;
for(int x = 0; x <= 500; x++)
{
for(int y = 0; y <= 500; y++)
{

do stuff here to figure out if it is prime then assign it to the array such as

array[x] = prime number;

then have a counter count up x everytime it finds a prime number
}

}