A for() loop in a for() loop

[BooYa]

Can be closed, I'm an idiot

[why06]

Brackets are your friends.

    int numbers[] = { 1, 1, 2, 4, 4, 5, 7, 8, 8, 9 };
    int i, j;
    
    for(i=0; i<10; i++)
    {
    for(j=i+1; j<10; j++)
    {
    if(numbers[i] == numbers[j]) 
    cout << "Duplicate values are: " << numbers[i] << endl;
    }
    }

[BooYa]

Brackets aren't needed here, i just don't understand how these for loops work.

[why06]

I'm pretty damn sure you need brackets... and even if you don't you should add them anyway, it makes it easier for people to read your code.

But anyway I see your problem. Your making j = i +1. You should make j=0. That was say the second for loop will be able to look through the entire array to find a match for element [i].

[lalakijilp]

you can also add cout statement to make it more clear.

    int numbers[] = { 1, 1, 2, 4, 4, 5, 7, 8, 8, 9 };
    int i, j;
    
    for(i=0; i<10; i++)
    {
      cout << "i is now" << i <<endl;
        for(j=i+1; j<10; j++)
              {
                cout << "j is now" << j <<endl;
               if(numbers[i] == numbers[j]) 
               cout << "Duplicate values are: " << numbers[i] << endl;
              }           
    }

[BooYa]

I'm pretty damn sure you need brackets... and even if you don't you should add them anyway, it makes it easier for people to read your code.

But anyway I see your problem. Your making j = i +1. You should make j=0. That was say the second for loop will be able to look through the entire array to find a match for element [i].

lol read my question, the code works fine but i simply dont understand how it works

[why06]

lol read my question, the code works fine but i simply dont understand how it works

So you don't know how a for loop works?

[Hell_Demon]

for(int i = 0/*Init I as 0*/; i<10/*if I is below 10*/;i++/*increment it*/)

[BooYa]

Hmm never mind... I just didn't understand how the second for loop would work inside the first and why j was set to i+1, but i understand now after trying those cout statements from laka

[why06]

Ok...if you want me to... and thanks lalakiljip.