Data types and variables in CL400
In CL400, there are several data types available for defining variables and constants. These data types include character, decimal, integer, and logical. Let's explore each data type in more detail and look at some code examples for defining and manipulating variables and constants.
- Character Data Type:
The character data type is used to represent alphanumeric characters in CL400. A character variable can be defined by using the DCL statement followed by the VAR keyword and the name of the variable. Here is an example:
DCL VAR(&MYVAR) TYPE(*CHAR) LEN(20)
In the above example, we have defined a character variable named &MYVAR with a length of 20 characters. We can also initialize this variable with a value as follows:
DCL VAR(&MYVAR) TYPE(*CHAR) LEN(20) VALUE('Hello, World!')
- Decimal Data Type:
The decimal data type is used to represent numeric data with decimal points. A decimal variable can be defined by using the DCL statement followed by the VAR keyword and the name of the variable. Here is an example:
DCL VAR(&MYVAR) TYPE(*DEC) LEN(10 2)
In the above example, we have defined a decimal variable named &MYVAR with a length of 10 digits and 2 decimal places. We can also initialize this variable with a value as follows:
DCL VAR(&MYVAR) TYPE(*DEC) LEN(10 2) VALUE(1234.56)
- Integer Data Type:
The integer data type is used to represent whole numbers in CL400. An integer variable can be defined by using the DCL statement followed by the VAR keyword and the name of the variable. Here is an example:
DCL VAR(&MYVAR) TYPE(*INT) LEN(4)
In the above example, we have defined an integer variable named &MYVAR with a length of 4 digits. We can also initialize this variable with a value as follows:
DCL VAR(&MYVAR) TYPE(*INT) LEN(4) VALUE(1234)
- Logical Data Type:
The logical data type is used to represent true/false or yes/no values in CL400. A logical variable can be defined by using the DCL statement followed by the VAR keyword and the name of the variable. Here is an example:
DCL VAR(&MYVAR) TYPE(*LGL)
In the above example, we have defined a logical variable named &MYVAR. We can also initialize this variable with a value as follows:
DCL VAR(&MYVAR) TYPE(*LGL) VALUE(*YES)
Finally, constants are also supported in CL400. A constant is a value that cannot be changed during program execution. Here is an example of defining a constant in CL400:
DCL CON(&MYCONST) TYPE(*CHAR) LEN(10) VALUE('Hello, World!')
In the above example, we have defined a constant named &MYCONST with a value of 'Hello, World!' and a length of 10 characters.
Overall, data types and variables in CL400 are used to store and manipulate values in programs. By understanding the different data types and how to define and initialize variables and constants, you can create effective programs in CL400.
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