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Question 22

Complete the trace table for the algorithm shown in Figure 1 when the variable grid is given the following value from the user:

101100

You may not need to use every row in the table.

Figure 1

grid ← USERINPUT
line ← ""
FOR p ← 0 TO LEN(grid) - 1
    IF grid[p] = '1' THEN
        line ← line + "X"
    ELSE
        line ← line + "O"
    ENDIF
    IF p MOD 3 = 2 THEN
        line ← ""
    ENDIF
ENDFOR

`grid`	`p`	`line`
`101100`

[3]

Markscheme

Representing algorithms Questions

GCSE
Computer Science
Representing algorithms

208 exam-style questions on AQA GCSE Computer Science Representing algorithms. Each one has a worked solution and a mark scheme showing where the marks go.

Representing algorithms

Question bank

Representing algorithms

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Question 22

Complete the trace table for the algorithm shown in Figure 1 when the variable grid is given the following value from the user:

101100

You may not need to use every row in the table.

Figure 1

grid ← USERINPUT
line ← ""
FOR p ← 0 TO LEN(grid) - 1
    IF grid[p] = '1' THEN
        line ← line + "X"
    ELSE
        line ← line + "O"
    ENDIF
    IF p MOD 3 = 2 THEN
        line ← ""
    ENDIF
ENDFOR

`grid`	`p`	`line`
`101100`

[3]

Markscheme

Representing algorithms Questions

GCSE
Computer Science
Representing algorithms

208 exam-style questions on AQA GCSE Computer Science Representing algorithms. Each one has a worked solution and a mark scheme showing where the marks go.