Question

Difference between program block and control section

Answer 1

Program blocks: segments of code that are rearranged within a single object program unit. Control Sections: segments that are translated into independent object program units. A block can contain separate segments of code in source program. Assembler will logically re-arrange them together.

Answer 2

Program block Allows programmers to write a constant operand's value as part of the instruction that utilizes it. A control section is a piece of a program that keeps its identity after it has been assembled.

Difference between program block and control section :

Program Block :

• Allow programmers to write a constant operand's value as part of the instruction that utilizes it.
• This eliminates the need to define the constant and create a name for it elsewhere in the program.

Control Section :

•  Translations of segments into separate object program units.    

• A control section is a piece of a program that keeps its identity after it has been assembled. Subroutines are frequently utilized in control sections. The main advantage of employing control sections is that they provide more flexibility.