Answers+of+C+sample+exam.docx
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1) The document contains answers to sample exam questions about C programming. 2) It includes true/false questions about function calls and pointers, multiple choice questions about loops and pointers, and code snippets to print a pattern, calculate tax, save data to a file, and perform integer division with error checking. 3) The questions cover a range of C programming concepts like functions, pointers, loops, structures, files, and error handling.
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The document provides educational information about Esalm Soliman Moursy Hassan, including that she earned a management information system degree from the Faculty of Commerce, obtained a software engineering diploma from the Information Technology Institute with very good honors and ranked third, and graduated from high school.
dt.docx
The document provides educational information about Esalm Soliman Moursy Hassan, including that she earned a management information system degree from the Faculty of Commerce, obtained a software engineering diploma from the Information Technology Institute with very good honors and ranked third, and graduated from high school.
Answers+of+C+sample+exam.docx
1) The document contains answers to sample exam questions about C programming.
2) It includes true/false questions with answers, multiple choice questions with answers, and code snippets implementing functions for printing asterisk patterns, calculating tax, saving employee data to a file, and performing integer division with error checking.
3) The questions and code snippets cover topics like functions, conditionals, loops, pointers, structures, and file I/O in C.
lec1.docx
The document provides an overview of various operating systems including UNIX, Linux, and Windows. It discusses the history and development of UNIX including early projects at Bell Labs and Berkeley. It also summarizes key features of UNIX such as security, reliability, and multi-user support. The document then describes the UNIX directory structure and common commands like ls, cd, cat, and man.
lec4.docx
The document discusses UNIX shells and their functions as an interface between users and the operating system hardware, including how shells allow for command execution, scripting, and redirection of standard input/output/error. It also covers common shell features like tab completion, history, aliases, environment variables, job control, and process management using commands like ps, kill, and pgrep.
QM17025+Rev0.1-05May2011.doc
This document is the quality manual for the Water Pollution and Marine Environmental Laboratory. It describes the laboratory's quality management system, which is established to meet the requirements of ISO/IEC 17025. The manual outlines the laboratory's organization, management system documentation, quality policies and objectives, roles and responsibilities of personnel, procedures for document control, review of customer requests and contracts, and technical requirements.
lec2.docx
The document discusses file permissions in a multi-user Linux environment, including how to set permissions using chmod, view permissions with ls, and how the permissions are checked. It also covers how to manage user accounts through commands like useradd, usermod, and userdel to create, modify and delete users, and groupadd and groupdel to manage groups. The vi text editor is also introduced including its different modes and common commands.
lec5+.docx
1. Tape backups allow for archiving large amounts of data in a sequential access format and are generally cheaper than hard disks. The tar command can be used to create and extract tape archives.
2. Compression tools like gzip, bzip2, zip, etc. compress files to reduce size and allow for more efficient storage and transfer. They each use different algorithms and result in varying file extensions and compression ratios.
3. Remote connection utilities like telnet, ftp, rlogin, rcp, and ssh allow users to access and transfer files between systems. Some like rlogin and rcp rely on .rhosts files for authentication without passwords between trusted hosts.
unix-OS-Lab-4.doc
The document contains a list of 31 lab exercises for a UNIX class, including tasks to list environment variables and shells, edit profile files, create aliases, manage processes, and use commands like ls, grep, sort, and jobs. It instructs students to complete tasks like changing login prompts, redirecting command output to files, running commands in the background, and killing their own processes. The document is from the UNIX Department of the Information Technology Institute in Giza, Egypt.
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Answers+of+C+sample+exam.docx
- 2. True.
- 3. False.
- 4. True.
- 5. False.
- 6. True.
- 8. D (because it will not enter the loop as I=0 not I==0)
- 9. C (because we can’t increment an array)
- 10. C
- 11. D
- 12. B
- 13. A
- 14. D
- 15. B
- 16. F
- 17. A
- 19. {
- 20. Int I,j;
- 22. {
- 23. For(i=1;i<j;i++)
- 24. {
- 25. Printf(“*”);
- 28. {
- 29. Float t;
- 30. If(s<=1000)
- 31. {
- 32. t=0;
- 33. }
- 34. Else
- 35. If(s<=2000)
- 36. {
- 37. T=s*0.05;
- 38. }
- 39. Else
- 40. {
- 41. T=s*0.1;
- 42. }
- 43. Return t;
- 44. }
- 45. ii)
- 47. {
- 48. FILE *fptr;
- 50. If(fptr)
- 51. {
- 53. Fclose(fptr);
- 54. }
- 55. }
- 56. iii)
- 57. int main()
- 58. {
- 60. Printf(“%d %s %s %f %f %f”,I,e.id,e.name,e.sal,taxf(e.sal),e.sal-taxf(e.sal));
- 61. }
- 63. int Division(int a,int b,int *ptr)
- 64. {
- 65. Int x;
- 66. If(b==0)
- 67. {
- 68. *ptr=0;
- 69. }
- 70. Else
- 71. {
- 72. X=a/b;
- 73. *ptr=1;
- 74. }
- 75. Return x;
- 76. }
- 77. End of Exam