uva10035 Primary Arithmetic

#include <cstdio>#include <climits>usingnamespacestd;
intmain()
{
unsignedinta, b;
while (scanf("%u%u", &a, &b) ==2&&!(a==0&&b==0))
    {
intcarry=0;
intcount=0;
inttemp;
while (a&&b)
        {
temp= (a%10) + (b%10) +carry;
carry=temp/10;
count+= (carry?1 : 0);
a/=10;
b/=10;
        }
if (a&&!b)
        {
while (a&&carry)
            {
temp= (a%10) +carry;
carry=temp/10;
count+= (carry?1 : 0);
a/=10;
            }
        } elseif (!a&&b)
        {
while (b&&carry)
            {
temp= (b%10) +carry;
carry=temp/10;
count+= (carry?1 : 0);
b/=10;
            }
        }
if (!count)
        {
printf("No carry operation./n");
        } elseif (count==1)
        {
printf("1 carry operation./n");
        } else        {
printf("%d carry operations./n", count);
        }
    }
return0;
}