Baby Me

#include<bits/stdc++.h>

using namespace std;

char s[20];

int main()
{
    int len,i,test,tc,num1,num2;

    scanf("%d",&test);

    getchar();

    for(tc=1; tc<=test; tc++)
    {
        gets(s);

        len = strlen(s);

        num1 = num2 = 0;

        bool flag = true;

        for(i=0; i<len; i++)
        {
            if(isdigit(s[i]) && flag)
            {
                while(isdigit(s[i]))
                {
                    num1 = num1*10+(s[i]-48);

                    i++;
                }

                flag = false;
            }

            if(!flag)
            {
                while(isdigit(s[i]))
                {
                    num2 = num2*10+(s[i]-48);

                    i++;
                }
            }
        }

        int num = num1*.5+num2*.05;

        double ans = num1*.5+num2*.05;

        if(num==ans)
        {
            printf("Case %d: %d\n",tc,num);
        }
        else
        {
            printf("Case %d: %g\n",tc,ans);
        }
    }

    return 0;
}