uva: 100 - 3n+1 problem

 #include<stdio.h>  
 void funtion(int n1,int n2);  
 int main()  
 {  
   int n1,n2;  
   while(scanf("%d %d",&n1,&n2)==2)  
   {  
     funtion(n1,n2);  
   }  
   return 0;  
 }  
 void funtion(int n1,int n2)  
 {  
   int i,m1,m2,j,k,l,m=0,n=1,c=0;  
   m1=n1;  
   m2=n2;  
   if(m1>m2)  
   {  
     i=m1;  
     m1=m2;  
     m2=i;  
   }  
   for(i=m1;i<=m2;i++)  
   {  
     k=i;n=1;  
     while(k!=1)  
     {  
       if(k%2==0)  
       {  
         k=k/2;  
       }  
       else  
       {  
         k=k*3+1;  
       }  
       n++;  
     }  
     if(n>m)  
     {  
       m=n;  
     }  
   }  
   printf("%d %d %d\n",n1,n2,m);  
 }