[Rhino24]

How to you write a algorithm (blocks of code) for these:?
a.) Obtain two numbers from the keyboard, and determine and display which (if either) is the larger of the two numbers.

b.)Obtain a series of positive numbers from the keyboard, and determine and display the sum of the numbers. Assume that the user types the sentinel value -1 to indicate “end of data entry”.

[burnthepc]

This is the simplest:

A)

int main()
{
int num1, num2;
cin >> num1 >> num2;

if(num1 > num2)
cout << num1;
else cout << num2;
// note: if they are the same value num2 is output

return 0;
}

B)

int main()
{
int x;
int sum = 0;
while(cin >> x)
{
if(x == -1) break;
sum += x;
}

cout << sum;
return 0;

}

You can mess with the formatting to your taste.

Rhino, I see you're posting a lot of questions for your course up here. I'd advise checking out these pages:

http://www.cplusplus.com/doc/tutorial/

Once you've done the tutorial then you should be able to do the questions easily...note that the above is for C++ not C, but a lot of the basic rules still hold.