Data structure and c

1. Data structure and c K.S. Prabhu Letterer All Deaf Educational Technology

2. Introduction in c • C program made by ken Thompson and Dennis Ritchie in 1970. • Developed by martin Richards. • Although C was designed for implementing System Software. • It is also widely used for developing portable Application Software.

3. ken Thompson and Dennis Ritchie

4. Means • C program mean compiler programming • C is a Program language. • It is a middle level language • This programming language is designed to help as Data process. • Data process is numbers, characters and strings. • Its provide use of output display

5. C Program logo and Code

6. The Character Set in C • Upper case alphabets: • It is capital word alphabets Example: • A B C D E …….Z

7. Sample code Program fflush(stdin); printf("Enter power to raise to:"); scanf("%d",&Y); fflush(stdin); power(&X,&Y); …………….. ……………… ………………. getch(); #include<stdio.h> power(int*m,int*n); void main() { int X,Y; clrscr(); printf("Enter number:"); scanf("%d",&X);

8. 2) Lower case alphabets: • It is small word through called by lower case alphabets Example: • a b c d e……..z

9. Sample Code Program #include<stdio.h> power(int*m,int*n); void main() { intx,y; clrscr(); printf("Enter number:"); scanf("%d",&x); • fflush(stdin); • printf("Enter power to raise to:"); • scanf("%d",&y); • fflush(stdin); • power(&x,&y); • …………….. • ……………… • ………………. • getch(); • }

10. 3) Numbered or digital characters: • It means also used by number or Ditital characters. Example: • 0 1 2 3 4 5 6 7 8 9

11. Sample code Program #include<stdio.h> void main() { inta,b; char cmd[25]; ………. ………. ………. } #include<stdio.h> #include<conio.h> void main() { char name[21],addrs[31]; clrscr(); puts("Enter your Name to a maximum of 20 characters"); puts("Enter your Address to a maximum of 30 characters"); …… …… }

12. 4) Arithmetic Operators: • It means arithmetic program through operated by arithmetic operators. • Example: • + , %, *, - • Plus,Division,Multiple and Minus

13. Sample Code Program #include<stdio.h> sum(inta,int b); void main() { intx,y,value; scanf("%d%d",&x,&y); value=sum(x,y); printf("Total is %d\n",value); } sum(inta,int b) { return a+b; } OUTPUT Output:: 5 3 Total is 8

14. 5) Relational Operators: • It is numberic and case character relation operated by relational operators. • Syntax:- • < >, < = >, = , = • Less and Great, Less Equal Great,Equal • Example • Example: • 4>5,6<4,4=4

15. Sample Code Program #include<stdio.h> #include<conio.h> void main() { intI,sum,num; clrscr(); sum=num=0; for(I=0;I<8;I=I+1) { …….. …….. …….. if(num<=0) getch(); }

16. 6) curly brace: Syntax:- { } • { → Starting curely space • } → Ending curely space • Example: • {……………………}

17. Sample Code Program {  Head of curly ………….. ………….. ………….. {  Sub of curly ………….. ………….. }  Sub End of curly ………. ………. getch(); }  Head End of Curly

18. 7) Square braces: Syntax:- [ ] Example: • Float [4] ; • String [9] ;

19. Sample Code program #include<stdio.h> #include<conio.h> void main() { char str1[101],str2[101]; intdiff,I=0; clrscr(); ……….. ……….. getch(); }

20. 8) Parenthèses braces :- • Syntax:- • ( ) Example: • Print (………) • Scant (………)

21. Sample Code program Program:: #include<stdio.h> #include<conio.h> void main() { char in_str[21]; clrscr(); puts("Enter a string to a maximum of 20 characters"); gets(in_str); fflush(stdin); puts(in_str); getch(); }

22. 9) Special characters: • It mean other syntax characters Syntax:- • &, !, #, ?, ~, `, @, ^, $, |,:,; .

23. Sample code program #include<stdio.h> #include<conio.h> void main() { char yn; clrscr(); do { puts("enter y/n(yes/no)"); yn=getchar(); fflush(stdin); if(yn!='y'&&yn!='n') puts("invalid input"); } while(yn!='y'&&yn!='n'); getch(); }

24. Special Character: