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Programming Exam Review: Key Concepts and Examples

Prepare for your programming exam by reviewing array manipulation, pointers, structures, and key programming problems. Learn to write code, trace algorithms, and answer short questions efficiently.

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Programming Exam Review: Key Concepts and Examples

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  1. CS 2308 Exam I Review

  2. Exam Format • 80 Total Points • 60 Points Writing Programs • 15 Points Tracing Code/Algorithms and determining results • 5 Points Short Answer • Similar to quizzes and programming assignments

  3. Example Programming Problem • Write a function that accepts two parameters: an array of integers and the number of integers in the array. Return an integer representing the number of odd integers in the array.

  4. Example Tracing Problem • What will the EXACT output of the following program be? int foo = 9; int *ptr = &foo; float foo2 = 5.7; *ptr = 2; foo2 = foo - foo2; if (foo > foo2) cout << "Hello!"; else if (foo < foo2) cout << foo2; else cout << foo; cout << endl; cout << "foo2 is: " << fixed << setprecision(1) << foo2 << endl;

  5. Example Short Answer • Why would we rarely use the equality operator when comparing floating point values?

  6. Arrays • 45 points • One and two-dimensional arrays • Declaration of various types • traversing • Difference between physical and logical size • Passing arrays as parameters • Arrays of records • Understand tsuPod program • Strings • Know how to use the string functions such as length(), substr() • Know how to use a string like an array of characters • Understand BioHelp and Exam Grader programs • 2-D arrays • Understand Game of Life program

  7. Structures • 15 points • Know how to declare a structure • Know how to access the fields in a structure • Arrays of structures • Understand tsuPod program

  8. Pointers • 15 Points • A pointer is a variable that holds the address of a memory location • Declaration • int *ptr; • Assignment • ptr = &foo; //& is the address function • Dereferencing • *ptr = 54; //same as foo=54; • You can point to any kind of data type • Relationship between arrays and pointers • Understand the “new” and “delete” commands

  9. How to Study • Rewrite all the programs. • Learn by doing and recognizing patterns. • Don’t stay up late!! Get some sleep and eat a good breakfast.

  10. What to bring • Pencils and erasers • We will provide scratch paper • No calculators

  11. Questions

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