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Flow of Control

INFSY 307 C++. Flow of Control. Flow of Control: order in which statements are performed. Sequence: one after the other Selection: selects a path based upon action Iteration: repetition. CONTROL STRUCTURES. Sequence.

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Flow of Control

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  1. INFSY 307 C++ Flow of Control

  2. Flow of Control: order in which statements are performed

  3. Sequence: one after the other • Selection: selects a path • based upon action • Iteration: repetition CONTROL STRUCTURES

  4. Sequence • One immediately following the other • Ordered flow of program logic • All programs follow this order unless directed to proceed in another manner

  5. Selection(Branching alters flow of control) If (logical expression) { statement(s); }

  6. Selection (Continued) If (logical expression) { statement(s); } else { statement; }

  7. Selection Example If (hours <= 40.0) { pay = rate * hours; } else { pay = rate * (40.0 + (hours - 40.0) * 1.5); } cout<<pay; //assume all types are float

  8. Selection • Only one of the two branches is executed • If the comparison is true, the first statement(s) are executed • If the comparison is false, the second statement(s) are executed

  9. Comparison Operators

  10. Let’s Try • Page 79 Savitch • #17 • #18

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