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Some Commonly asked Function/Objects Vs. header files (CBSE 12th
Exam)
1. abs(), fabs() – math.h (removes sign. fabs is for floating point numbers)
2. ceil() – math.h (brings to higher side double value will make 5.2 to 6.0)
3. clrscr() – conio.h
4. cin – iostream.h
5. cout – iostream.h
6. endl – iostream.h
7. exit() – process.h
8. floor() – math.h (brings to lower side double value will make 5.7 to 5.0)
9. getc(), putc() – stdio.h (works for file as well as console)
10. getchar(), putchar() – stdio.h (Works for console only)
11. getch() – conio.h
12. getline() – iostream.h
13. gets(), puts() – stdio.h (accepts string or displays string)
14. isalpha(), isalnum(), isdigit(), islower, isupper() – ctype.h
15. open(), close() – fstream.h / ifstream.h /ofstream.h
16. pow() – math.h
17. random(), randomize() – stdlib.h
18. read(), write() – fstream.h
19. seekg(), seekp() – fstream.h
20. setiosflags() – iomanip.h
21. setprecision() – iomanip.h
22. setw() – iomanip.h
23. sqrt() – math.h
24. strcat() – string.h (concatenates (adds) two strings)
25. strcpy() – string.h
26. strcmp() – string.h
27. strcmpi() – string.h (compares string by ignoring case)
28. strlen() – string.h
29. strlwr(), strupr() – string.h (non standard functions but works in Turboc)
30. tellg(), tellp() – fstream.h
31. tolower(), toupper() – ctype.h
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Some Commonly asked Function/Objects Vs. header files (CBSE 12th Exam)

  • 1. 20200321-Ver 0 © 2020 Computersirkiclass.com, All rights reserved Some Commonly asked Function/Objects Vs. header files (CBSE 12th Exam) 1. abs(), fabs() – math.h (removes sign. fabs is for floating point numbers) 2. ceil() – math.h (brings to higher side double value will make 5.2 to 6.0) 3. clrscr() – conio.h 4. cin – iostream.h 5. cout – iostream.h 6. endl – iostream.h 7. exit() – process.h 8. floor() – math.h (brings to lower side double value will make 5.7 to 5.0) 9. getc(), putc() – stdio.h (works for file as well as console) 10. getchar(), putchar() – stdio.h (Works for console only) 11. getch() – conio.h 12. getline() – iostream.h 13. gets(), puts() – stdio.h (accepts string or displays string) 14. isalpha(), isalnum(), isdigit(), islower, isupper() – ctype.h 15. open(), close() – fstream.h / ifstream.h /ofstream.h 16. pow() – math.h 17. random(), randomize() – stdlib.h 18. read(), write() – fstream.h 19. seekg(), seekp() – fstream.h 20. setiosflags() – iomanip.h 21. setprecision() – iomanip.h 22. setw() – iomanip.h 23. sqrt() – math.h 24. strcat() – string.h (concatenates (adds) two strings) 25. strcpy() – string.h 26. strcmp() – string.h 27. strcmpi() – string.h (compares string by ignoring case) 28. strlen() – string.h 29. strlwr(), strupr() – string.h (non standard functions but works in Turboc) 30. tellg(), tellp() – fstream.h 31. tolower(), toupper() – ctype.h
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