# Relational and Equality Operators Table 4-1. Sample Conditions Table 4-2.

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Relational and Equality Operators Table 4-1

Sample Conditions Table 4-2

Logical Operators And && (temperature > 90) && (humidity > 0.90) Or || (salary 5) Not ! !(0 <= n && n <= 100)

Operator Precedence Table 4.6

Sequential Flow A set of steps that are executed sequentially { statement; } statement

Selection Control Structure Execution path changes based on a condition Condition Do this Do something else FT

Character Comparisons Table 4.8

if Statement with One Alternative if (condition) action to perform if true; if (R != 0.0) current = voltage / R;

if Statement with Two Alternatives if (condition) action to perform if true; else action to perform if false; if (voltage > 3.3 ) printf(A digital High is present!"\n); else printf(A digital Low is present!\n");

Blocks if (condition) { statement; } else { statement; } if (condition) { statement; } else { statement; }

Nested if Statements if (x > 0) num = num + 1; else { } if (x < 0) num_neg = num_neg + 1; else /* x equals 0 */ num_zero = num_zero + 1;

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