Posttest Read

A posttest read is a type of data reading method where the first data record is read separately from the remaining records. In this method, the program reads the first data record before entering a loop or a series of statements to read the remaining 99 records.

Explanation:

1. Posttest Read Definition:
A posttest read is a data reading technique used in programming where the first data record is read separately from the rest of the records. It is called a posttest read because the first record is read before the loop or block of statements that read the remaining records.

2. Reading the First Data Record:
In a posttest read, the program first reads the first data record outside the loop or block of statements that process the data. This is typically done to initialize variables or perform specific actions based on the first record.

3. Loop or Block of Statements:
After reading the first record, the program enters a loop or a block of statements that iterates over the remaining 99 data records. This loop or block of statements is responsible for processing each record individually.

4. Processing the Remaining Records:
Within the loop or block of statements, the program reads the next data record, performs any necessary calculations or operations, and then moves on to the next record. This process continues until all 99 records have been processed.

5. Advantages of Posttest Read:
- Allows for separate handling of the first record, which may require different processing or initialization compared to the rest of the records.
- Provides flexibility in handling different types of data records.
- Allows for clearer and more organized code structure.

Conclusion:
A posttest read is a data reading technique where the first data record is read separately from the remaining records. This method allows for separate handling of the first record and provides flexibility in processing different types of data. It helps in organizing the code and improving readability.