notes/education/software development/ECE1400/Chapter.md
2024-09-18 11:32:12 -06:00

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  1. The following program fragments illustrate the logical operators. Show the output produced by each, assuming that i, j, and k are int variables.

a. i = 10; j = 5;

printf("%d", !i < j);

// Expected output: `1`, because `!i` evaluates to 0, and 0 is less than 5, so that expression evaluates to true, or 1.

b. i = 2; j = 1;

printf("%d", !!i + !j);

// Expected output: `1`, because !!2 evaluates to 1, and !j evaluates to 0

c. i = 5; j = 0; k = -5;

printf("%d", i && j || k);

// Expected output: `1`, because i && j should evaluate to 0, but `0 || 1` should evalulate to true.

d. i = 1; j = 2; k = 3;

printf("%d", i < j || k);

// Expected output: `1`
  1. Write a single expression whose value is either -1, 0, or 1 depending on whether i is less than, equal to, or greater than j, respectively.
/*
	If i < j, the output should be -1.
	If i == j, the output should be zero
	If i > j, the output should be 1.
*/
(i > j) - (i < j)
  1. Is the following if statement lega