struct formula
{  int a;
   char opp;
   int b;
   char equal_sign;
   int c;
   char dot;
   
};

int main()
{
int i=1;
struct formula fi;

while(cin>>fi.a)
{
cin>>fi.opp;
cin>>fi.b ;
cin>>fi.equal_sign;
cin>>fi.c;
cin>>fi.dot;

int sum1=0,sum2=0,sum3=0;

while(fi.a>0)
	    {
	        sum1+=fi.a%10;
	        fi.a=fi.a/10;
		}
	   
	
while(fi.b>0)
	    {  
	        sum2+=fi.b%10;
	        fi.b=fi.b/10;	
	    }

while(fi.c>0)
	    {
            sum3+=fi.c%10;
	        fi.c=fi.c/10;
         } 
		
	
		if(fi.opp=='*')        //checking multiplication
		{if( sum1*sum2%9 ==  sum3%9 )
			cout<<i<<". PASS\n";
		else
			cout<<i<<". NOT!\n"; 
		}
		
		else if(fi.opp=='+')     //checking addition
		{if( (sum1+sum2)%9 == sum3%9)
	     cout<<i<<". PASS\n";
        else
			cout<<i<<". NOT!\n";
		}

	
		i++;
	}



return 0;

}//end main

aresh, on 04 May 2012 - 01:32 PM, said: