D28. 題目練習

這次一樣是練3n+1的題目，之前是用C語言，這次用C++來寫

#include<iostream>
using namespace std;
int main()
{   
    int n;
    cin>>n;
    while(n!=1){
       if(n%2==0){
    	 n=n/2;
 	   }
	   else{
		 n=n*3+1;
	   }
	 cout << n <<" ";
	}
	cout << endl;
	return 0;
}

進階(uva100)

#include<iostream>
using namespace std;
int main()
{   
    int a,x,y,n,i,j,count=1,max=1;
 while(cin>>i)
 { cin>>j;
   count=1;max=1;
   if(i>j)
    {
      cout<<i<<" "<<j<<" ";
      x=i;
      i=j;
      j=x;
    }
    else
      cout<<i<<" "<<j<<" ";
   for(a=i;a<=j;a=a+1)
    {
     n=a;count=1;
     while(n!=1){
        if(n%2==1)
            {
			n=n*3+1;
            count=count+1; }
        else
            {
			n=n/2;
            count=count+1; }}
      if(count>max) {max=count;}
    }
   cout<< max<<endl;
 }
 return 0;
}

跟C語言的差別其實只在輸入輸出的地方而已，所以在語言轉換過程並不難