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Subgoals

Section 5.13 Selection-WE6-P1

Subgoals for Evaluating Selection Statements.

  1. Diagram which statements go together
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  2. For if statement, determine whether expression is true or false
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  3. If true – follow true branch, if false – follow else branch or do nothing if no else branch
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Subsection 5.13.1

Exercises Exercises

1.
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2.
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Use this given setup for each of the questions below.
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int alpha = 2, beta = 1, delta = 3, eta = 0, gamma = 0;
double omega = 2.5, theta = -1.3, kappa = 3.0, lambda = 0.0, rho = 0.0;
Given
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if (omega > kappa)
{
    if (alpha > delta)
        eta = 5;
    else
        eta = 4;
}
else
    if (alpha < delta)
        eta = 3;
    else
        eta = 2;
3.
Q18: After executing the above code, the value in variable eta is .
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Given
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int a = -5;
int b = 5;
if (a < 0)
    if (b > 0)
        a = b;
else
    a = b + 10;
    b = b + 3;
4.
Q19: After executing the above code, the value in variable a is and the value in variable b is .
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Given
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int x = -8;
int y = 10;
if (x < 0)
{
    if (y < 0)
    x = y;
}
else
    x = y + 10;
    y = x + y;
5.
Q20: After executing the above code, the value in variable x is and the value in variable y is .
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