3. Declare the following:

1. A data declaration each for a 16-bit signed and an unsigned integer with initial values of 84Ah and 6712h

2. A data declaration each for a 32-bit signed and an unsigned integer with no initial values.

3. A null-terminated string variable with value "Computer Science."

4. A symbolic constant named "Area of a circle" using the equal-sign directive and assign it an arithmetic expression that calculates the area in terms of Pi and radius, R of the circle.