2.1.1 Demonstrate the process of declaring variables.
2.1.2 Display variable values.
2.1.3 Apply integral data types.
2.1.4 Apply floating‐point data types.
2.1.5 Apply arithmetic operators.
2.1.6 Apply Boolean data type.
2.1.7 Apply numeric type conversion.
2.1.8 Apply char data type.
2.1.9 Apply string data type.
2.1.10 Define named constants and enumerations.