至少 max1=max2=0 的0要改成1


> #include<iostream.h>
> main()
> {
> int a,b,max1=1,max2=0,ca=0;
> while(cin>>a>>b){
> 	max1=max2=0;
>     if(a>b){int temp=a;a=b;b=temp;}
>     if(a>0&&b>0&&b<1000000&&a<1000000);
> 	else break;
> 	for(int i=a,ca=a;i<=b;i++){
> 		while(ca!=1){
> 			if(ca%2!=0) ca=3*ca+1;
> 			else ca=ca/2;
> 			max1++;}
> 			ca=i+1;
>         if(max1>max2) max2=max1;
> 		max1=1;
> 	}
> cout<<a<<" "<<b<<" "<<max2<<endl;    
> }
> return 0;
> }