#include<iostream>
using namespace std;
int main()
{
    int i,j;
    cin>>i>>j;
    cout<<i<<" "<<j<<ends;
    int temp=i;
    int Array[10000];
    int a=0;
    while(temp<=j)
    {
        int count=1;
        while(temp!=1)
         {
            if(temp%2==0)
                temp/=2;
            else
                temp=3*temp+1;
            count++;
        }
        Array[a]=count;
        temp=++i;
        a++;
    }
    int max=Array[0];
    for(int n=1;n<a;n++)
    {
        if(max<Array[n])
            max=Array[n];
        else continue;
    }
    cout<<max<<endl;
    return 0;
}
this is my answer,why it is wrong?

The input are SEVERAL pairs of numbers,but your code has no cycle for this.