A good answer might be:

Yes: in Pascal begin and end delimit a block. In C and Java { and } delimit a block.

Sequence

Pascal, C, and Java are structured languages. A block of statements in those languages has one entry point and one exit point.

What about two blocks in a row? Say that the exit conditions of block 1 are the correct entry conditions for block 2. Then the two blocks can follow in sequence.

The set of two blocks can be regarded as a one big block. If the entry conditions for block 1 are correct, then the exit conditions for block 1 are correct, then the entry conditions for block 2 are correct, then (finally) the exit condtions for block 2 are correct.

QUESTION 12:

Look at the big block (in dotted lines). If the big block entry conditions are correct, what do you know about the big block exit conditions?