The Presentation given at KK Wagh Polytechnic, Nashik for Second Year Information Technology Students on 15/01/2011.

1. Tushar B. Kute, Department of Information Technology, Sandip Institute of Technology and Research Centre, Nashik An Imperative Study of ‘C’

3. Why ‘C’ only?

5. Two views of program user interface software layers hidden by user interface user’s view programmer’s view

6. Alphabets, Digits, Special Symbols. Constants, Variables, And Keywords Instructions Program. Forming a C program

7. Compiling a C program

16. switch Statement Flow Chart

18. while Loop while (continuation-condition) { // loop-body; }

19. while Loop Flow Chart, cont. int i = 0; while (i < 100) { printf(&quot;Welcome to C!&quot;); i++; }

20. do-while Loop do { // Loop body; } while (continue-condition);

21. for Loop for (initialization; condition; increment/decrement) { //loop body; }

24. Which Loop to Use?

25. The break Keyword

27. The continue Keyword

29. Arrays Array is a data structure that represents a collection of the same types of data. An Array of 10 Elements of type int

38. Multidimensional Array Illustration

39. Function

62. Memory map for arrays a[i].roll a[i].name a[i].marks i 2 1 9 3 0 7 6 5 4 8 a[5].roll a[9].name

63. Pointers

69. Pointer Example int *p, x, y, *q = NULL; p = &x; *p = 4; p x (or *p) y 4 ? p = &y; p x y 4 ? *p is now another name for y q q . .

70. *p = 8; p x y 4 8 q = p; p x y 4 8 q *p or *q q *p .

71. p = &x; p x y 4 8 *q *p = *q; p x y 8 8 q *p q *p *q 8

73. arrayOfPtr[0] = &k; arrayOfPtr[2]=&j; j k 6 4 arrayOfPtr ? 0 1 2 3 ?