What is read and data statement?

What is read and data statement?

A READ statement must always be used with a DATA statement. READ statements assign variables to DATA statement values on a one-to-one basis. READ statement variables may be numeric or string, and the values read must agree with the variable types specified. If they do not agree, a “Syntax error” results.

What is the read statement?

The READ statement is used to pick up information for input from external sources. These sources could be input from the keyboard, computer file or a magnetic tape. It can also be used to convert numbers represented within CHARACTER variables to a machine numerical representation (REAL, INTEGER, etc.).

What is input statement?

The INPUT statement lets the user type ahead when entering a response. Users familiar with a sequence of prompts can save time by entering data at their own speed, not waiting for all prompts to be displayed. Responses to a sequence of INPUT prompts are accepted in the order in which they are entered.

What is the main difference between let statement and input statement?

LET : 1. Programmer assigns the value while writing the program. INPUT : 2. Different values could be entered in different times of execution.

What is a data statement?

The data statement is another way to input data that are known at the time when the program is written. It is similar to the assignment statement. The syntax is: data list-of-variables/ list-of-values/. For this reason, the data statement is mainly used in the main program and not in subroutines.

What is the rule of read data statement?

A successful Format 1 READ statement retrieves a record from the file according to the following rules: The last OPEN, READ, or START verb used for the file determines which record is retrieved. Other file operations do not affect which record is retrieved.

What is INPUT statement explain with example?

An input/output statement or IO statement is a portion of a program that instructs a computer how to read and process information. It pertains to gather information from an input device, or sending information to an output device.

Which statement is used for INPUT?

Use the INPUT statement to halt program execution and prompt the user to enter a response. Data entered at the terminal or supplied by a DATA statement in response to an INPUT statement is assigned to variable. With a TAB function you can specify exactly where you want an item to be printed in an output line.

What is the use of LET and INPUT statement?

LET statement is used to assign a value to a variable at the time of development of the program. INPUT statement allows the user to assign values to variables at the time of execution of the program. LET statement doesn’t make the program user-friendly.

Why do we use the print statement?

Statement Purpose The print statement is used to send output to the standard output unit ( usually your monitor, or sometimes your printer ) of your computer system.

How is the INPUT statement different from the put statement?

The INPUT statement reads data while the PUT statement writes data values, text strings, or both to the SAS log or to an external file. The INPUT statement can read data from external files; the INFILE statement points to that file and has options that control how that file is read. Examples.

What’s the difference between input and output in Excel?

The difference is that, if you have a whole line of symbols as input and read is used, than the cursor is forwarded to the next data item in the line, that is to the next character if the inputs should be characters, or the next number, if the inputs should be numbers.

What does informat do in formatted input statement?

With formatted input, an informat follows the variable name in the INPUT statement. The informat gives the data type and the field width of an input value. Informats also allow you to read data that are stored in nonstandard form, such as packed decimal, or numbers that contain special characters such as commas.

When to use infile statement before INPUT statement?

The automatic variable _ERROR_ is not set to 1 for the invalid observation. Use the INPUT statement to read raw data from an external file or in-stream data. If your data are stored in an external file, you can specify the file in an INFILE statement. The INFILE statement must execute before the INPUT statement that reads the data records.