I have took help from net.And after taking a look I understood what to do actually.
Here for each test case I have to use this formula
After using MaiorAB that means in portugese and in english by google translating i have find it is maximum or larger or more in AB
So in Maior is in MaiorAB and in from the input C
scanf("%d %d %d",&a,&b,&c);
printf("%d eh o maior\n",maior);