C# Read and Write to Txt File

C Programming Language

  • Last Updated : 08 Mar, 2022

C programming tutorial

C is a procedural programming linguistic communication. It was initially developed by Dennis Ritchie as a system programming language to write operating system. The primary features of C linguistic communication include depression-level admission to memory, simple prepare of keywords, and clean style, these features make C language suitable for organisation programming like operating organisation or compiler development.

Recent Articles on C !
C Output & Multiple Choice Questions

Nuts, Variable Proclamation, Definition and Telescopic, Information Types, Storage Classes, Input/Output, Operators, Preprocessor, Array & Strings, Command Statements, Functions, Pointers, Enum, Struct and Union, Memory Management, File Treatment, Puzzles, Misc, C Linguistic communication Interview Questions, Multiple Choice Questions

Functions:

  1. Functions in C
  2. Importance of function epitome in C
  3. Functions that are executed before and afterwards main() in C
  4. return statement vs exit() in principal()
  5. How to Count Variable Numbers of Arguments in C?,
  6. What is evaluation order of function parameters in C?
  7. Does C support function overloading?
  8. How can we return multiple values from a role?
  9. What is the purpose of a part prototype?
  10. Static functions in C
  11. go out(), arrest() and assert()
  12. Implicit return blazon int in C
  13. What happens when a role is called before its declaration in C?
  14. _Noreturn function specifier in C
  15. exit() vs _Exit()
  16. __func__ identifier in C
  17. Callback part in C
  18. Nested functions in C
  19. Parameter Passing Techniques
  20. prisoner of war() part in C
  21. tolower() function in C
  22. fourth dimension() function in C

Pointers:

  1. Introduction to pointers in C and C++
  2. Double Arrow (Arrow to Pointer) in C
  3. Why C treats array parameters every bit pointers?
  4. Output of the program | Dereference, Reference, Dereference, Reference
  5. Dangling, Void , Null and Wild Pointers
  6. An Uncommon representation of array elements
  7. How to declare a arrow to a function?
  8. Pointer vs Array in C
  9. void pointer in C
  10. NULL pointer in C !
  11. Function Pointer in C
  12. near, far and huge pointers
  13. Generic Linked Listing in C
  14. restrict keyword in C
  15. const char *p, char * const p and const char * const p
  16. Pointer to an Assortment

Enum, Struct and Union:

  1. Enum in C
  2. Structures in C
  3. Union in C
  4. Struct Hack
  5. Construction Member Alignment, Padding and Data Packing
  6. Operations on struct variables in C
  7. Bit Fields in C
  8. Structure Sorting (By Multiple Rules) in C++
  9. Flexible array members in structure
  10. Difference between Structure and Union
  11. Difference between C structures and C++ structures
  12. Anonymous Union and Construction in C
  13. Compound Literals in C

Memory Management:

  1. Memory Layout of C Programs,
  2. How to deallocate retentivity without using free() in C?
  3. calloc() versus malloc()
  4. How does free() know the size of memory to be deallocated?
  5. Use of realloc()
  6. What is Retentiveness Leak? How can nosotros avoid?

File Treatment:

  1. fseek() vs rewind() in C
  2. EOF, getc() and feof() in C
  3. fopen() for an existing file in write mode
  4. Read/Write structure to a file
  5. fgets() and gets() in C
  6. Basics of File Treatment
  7. fsetpos() in C
  8. rename office in C/C++
  9. tmpfile() part in C
  10. fgetc() and fputc() in C
  11. fseek() in C/C++
  12. ftell() in C
  13. lseek() in C/C++
  14. remove part in C/C++
  15. Merge contents of two files into a third file
  16. Impress contents of file in C

Puzzles:

  1. C Program to print numbers from ane to N without using semicolon?
  2. How to find sum of ii numbers without using any operator
  3. How will you lot show retentivity representation of C variables?
  4. Condition To Print "HelloWord"
  5. Change/add but 1 character and print '*' exactly 20 times
  6. How tin we sum the digits of a given number in unmarried statement?
  7. What is the best mode in C to convert a number to a string?
  8. Calculate Logn in one line
  9. Print "Even" or "Odd" without using Conditional argument
  10. How will you impress numbers from 1 to 100 without using loop?
  11. How can we sum the digits of a given number in unmarried statement?
  12. How will y'all print "Geeks for Geeks" without using a semicolon
  13. Write a one line C office to round floating betoken numbers
  14. How will implement Your Own sizeof
  15. How to count set bits in a floating point number in C?
  16. How to change the output of printf() in main() ?
  17. How to find length of a string without string.h and loop in C?
  18. Implement your own itoa()
  19. Write a C plan that does not terminate when Ctrl+C is pressed
  20. How to mensurate fourth dimension taken by a part in C?
  21. Print a long int in C using putchar() only
  22. Convert a floating point number to cord in C
  23. How to write a running C code without principal()?
  24. Write your own memcpy()
  25. C program to print characters without using format specifiers
  26. C programme to print a string without any quote (singe or double) in the program
  27. Execute both if and else statements simultaneously
  28. Print "Hello World" without using whatever header file

Misc:

  1. Quine – A self-reproducing program
  2. Complicated declarations in C
  3. Utilise of bool in C
  4. Sequence Points in C | Set up 1
  5. Optimization Techniques | Set up 2 (swapping),
  6. ASCII NUL, ASCII 0 ('0?) and Numeric literal 0
  7. Little and Big Endian Mystery,
  8. Comparator function of qsort() in C
  9. Programme to validate an IP address
  10. Multithreading in C
  11. Assertions in C/C++
  12. fork() in C
  13. Interesting Facts in C Programming
  14. Precision of floating point numbers in C++ (flooring(), ceil(), trunc(), circular() and setprecision())
  15. setjump() and longjump() in C
  16. nextafter() and nexttoward() in C/C++
  17. pthread_cancel() in C
  18. pthread_equal() in C
  19. pthread_self() in C
  20. Local Labels in C
  21. lvalue and rvalue in C
  22. Get and set the stack size of thread aspect
  23. Departure between fork() and exec()
  24. Errors in C/C++
  25. Why is C considered faster than other languages
  26. Incompatibilities between C and C++
  27. Convert C/C++ code to assembly linguistic communication
  28. Error Handling in C
  29. Executing chief() in C/C++ : Backside the scene
  30. Hygienic Macros in C
  31. Command line arguments in C/C++
  32. scanf(), fscanf(), sscanf(), scanf_s(), fscanf_s(), sscanf_s()
  33. Some Interesting Facts in C Programming
  34. Database Connectivity using C/C++
  35. Function Interposition in C
  36. Macros vs Functions
  37. Write your own memcpy() and memmove()

C Language Interview Questions

  • Commonly Asked C Programming Interview Questions | Set ane
  • Normally Asked C Programming Interview Questions | Ready 2

C/C++ Programs

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Source: https://www.geeksforgeeks.org/c-programming-language/

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