Senior Mainframe Developer Interview Questions and Answers

Yes, data can be moved from an alphanumeric to a signed numeric variable in COBOL.

• In COBOL, data can be moved from an alphanumeric variable to a signed numeric variable using the MOVE statement.

• The alphanumeric data will be converted to numeric format during the move operation.

• Make sure the alphanumeric data is compatible with the numeric variable's format to avoid errors.

Data can be passed to COBOL through JCL using SYSIN DD statement, PARM parameter, and environment variables.

• Use SYSIN DD statement to pass data to COBOL program

• Pass data using PARM parameter in JCL

• Set environment variables in JCL to pass data

Index is the position of an element in an array, while subscript is the variable used to access elements in an array.

• Index is a fixed value that represents the position of an element in an array.

• Subscript is a variable used to access elements in an array by specifying the position.

• Example: In an array arr[5], 5 is the index, while arr[i] uses the subscript i to access elements.

I would prioritize seating based on work requirements and schedule staggered shifts if necessary.

• Prioritize seating based on work requirements and team dynamics

• Implement staggered shifts to accommodate limited seating

• Consider remote work options for some team members

• Utilize shared workspaces or hot-desking to maximize seating capacity

Program to reverse a string in mainframe development

• Use a loop to iterate through the characters of the string

• Swap the characters from start to end of the string

• Repeat until the entire string is reversed

• Example: INPUT: 'hello' OUTPUT: 'olleh'