Master Mainframe Technologies - COBOL, JCL, DB2, VSAM, CICS & More
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Practice Problems

Master COBOL, JCL, and mainframe skills with real-world scenarios

109
Total Problems
38
Beginner
47
Intermediate
24
Advanced

🟢 COBOL Basics

COBOL
Write a COBOL program that displays "HELLO, MAINFRAME WORLD!" on the screen....
hello-world display basics
COBOL
Write a program that accepts a user's name and displays a personalized greeting....
accept input working-storage
COBOL
Write a program that displays the current date in MM/DD/YYYY format....
date accept formatting
COBOL
Write a COBOL program that displays "Welcome to COBOL Programming" and demonstrates all four divisions....
basics structure divisions
COBOL
Write a program that accepts user name and displays a personalized greeting....
accept display input output
Beginner
COBOL
Write a well-commented program that calculates area of rectangle....
comments documentation basics
COBOL
Explain and demonstrate the difference between STOP RUN and GOBACK....
stop-run goback termination
COBOL
Create a program demonstrating proper use of COBOL reserved words like MOVE, ADD, DISPLAY....
reserved-words syntax basics
COBOL
Use INITIALIZE to set fields to default values....
initialize reset default
Intermediate
COBOL
Concatenate multiple fields using STRING statement....
string concatenate delimited
Intermediate
COBOL
Use INSPECT to count and replace characters....
inspect tallying replacing converting