694 - The Collatz Sequence

#include<stdio.h>

int collatz( long long m,long long n,intcount)

{

count++;

if(m==1) return count;

if(m>n) return--count;

if(m%2==0)

collatz(m/2,n,count);

else

collatz(m*3+1,n,count);

}

int main()

{

long long m,n;

int i=0,count=0;

while(1)

{

i++;

scanf("%lld%lld",&m,&n);

if(m<0&&n<0)break;

printf("Case %d: A = %lld, limit = %lld,",i,m,n);

printf("number of terms =%d\n",collatz(m,n,count));

}

return 0;

}

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