number sequence problem

[antwon128]

I've been trying this number sequence problem for a while now.
The program is supposed to test for numbers that are divisible by 2,3, and 5. Then the 1501st number should be outputted.

Here's what I have, what am I doing wrong?

  int x = 1, y = 2, z = 3, i=5;  
    for(x = 1; x <=1501; x++)
    {
        while(x % y == 0){
            x /= y;
        }
        while(x % z == 0){
            x/=z;
        }
        while(x % i == 0){
            x/=i;
        }
        if (x == 1)
                cout << x;

[Gaius Baltar]

x is never going to get higher than 1 because of how you have your program set up. Here, try this:

int x = 1, y = 2, z = 3, a = 5;  
    for(int i = 1; x <=1501; ++x)
    {
        
        if(x % y == 0){
            x /= y;
        }
        if(x % z == 0){
            x/= z;
        }
        if(x % i == 0){
            x/= a;
        }
        if (i == 1501)
                cout << "1501st number is: "<< x;
        x++;

I'm not sure if that is what you wanted though, you'd have to be more specific about your problem

[a k n]

 std::cout << "The 1501st number is " << 30*1501;

Though , this is what you are trying to do .

int x=2,y=3,z=5,i = 1;
for(int n = 0;n<1501;++i)
{
     if(!(i%x || i%y || i%z)) //de morgan's law : a' and b' = (a or b)'
           ++n;
}
cout << i;

Hope that helps.

[antwon128]

I tried what Gaius suggested and i only get a blank command prompt when i compile it?

Although akn your solution works I thank you for that, when i try what gaius suggested I just get a blank cmd prompt.

Just wondering why that happens.

[Gaius Baltar]

Woops... looks like I forgot to replace the x's in the for loop:

Change this
(int i = 1; x <=1501; ++x)

to this
(int i = 1; i <=1501; ++i)

But the result is probably not what you wanted.
Just go with a k n's code