C Programming.

1. Computer Programming 2. History of Prog.Language 3. Introduction to C 4. Features of C 5. Starting Turbo C 6. C Tokens 7. Basic requirement of C 8. Comments 9. My First Program in C 10. Line Break 11. C Escape Sequence 12. Constants or Literals 13. Variables in C 14. Data Types in C 15. Range of Data Types in C 16. Declare Variables 17. Reserved Key Words 18. printf( ) statement 19. Chained & Embedded state 20. Prog.to print sum of 2 nos 21. scanf( ) stament 22. print sum & average 23. print Area of Rectangle 24. Area & Circumference of Circle 25. Prg.for Simple Calculator 26. Operators in C 27. Ex. Of Operators 28. Swap two numbers 29. Hierarchy of Operators 30. if( ) statement 31. Prg.to check +ve,-ve or zero 32. if..else statement 33. Prg.to check Odd or Even 34. Prg.to print larger of 2 nos 35. Prg.to print largest of 3 nos 36. Prg.to check divisibility 37. Prg.to check print range 38. for. . . loop statement 39. prg.to print series of nos 40. Prg.to check divisibility 41. prg.to print sum of nos 42. Prg.to print Pyramid 43. prg.for Factorial 44. prg.to fill screen 45. prg.for largest/smallest no 46. prg.to print reverse no 47. prg.to add each digit 48. prg.for sum of factorial 49. prg.for fibonacci series 50. prg.to check Prime nos 51. prg. Prime no from 1 to 100 52. prg.Specified Prime nos 53. while( ) statement 54. do. . While statement 55. goto statement 56. break & continue state. 57. switch case statement 58. Array in C 59. Reverse order using array 60. Ascending/Descending order 61. prg.to search no in Array 62. Double Dimension Array 63. String in C 64. String with spaces in C 65. Print string in reverse 66. prg.to count A,E,I,O,U vowel 67. Function( ) in C 68. Function program examples 69. General Purpose Programs 70. Loan & EMI calculation prg. 71. Table print prg. 72. Leap year program 73. lower to UPPER case prg. 74. Frequency Distribution prg. 75. Bank note calculation prg. 76. Simple Interest prg. 77. Compound Interest prg. 78. Simple Depreciation prg. 79. Reducing bal.Depreciation 80. Marksheet prg. 81. Income Tax prg. 82. Time calculator prg. 83. Distance converter prg. 84. Volume Air Calculation 85. Time to fill Water Tank 86. Salary Calculation prg. 87. Total Sale Calculation prg. 88. Male/Female percentage prg. 89. Library Rent prg. 90. Office Expance prg. 91. Total Salary Calculation prg. 92. Profit or Loss prg. 93. Total Profit/Loss prg. 94. Convert Amt to Word. 95. ASCII Table 96. C Operators 97. C & C++ Reserved Keyword 98. C & C++ Pre-Define Function 99. C Interview Part1 100. C Interview Part2 101. C Interview Part3 102. C Interview Part4 103. C Interview Part5 104. C Interview Part6 105. C Interview Part7 106. C Interview Part8 107. C Interview Part9 108. C Interview Part10 109. C Interview Part11
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Function() in C tutorials

  • Uptill now we have worked with main() function only. It is one and only function that consists of header and body of program. Now its time to use another function.

  • For smaller program main() function is sufficient, while for complex and bigger program we can write separate functions and call it. This is known as funcation call, which is point at which function is called, where by actual function is inserted in program during linking to library files.

  • When program becomes large, it becomes difficult to manage it as single program. Hence one can divide program into smaller parts known as functions.

  • Function act individually and gives result.

  • Simlarly, statements required repeatedly within programs can be written once as funcation, and can be called many times.

  • A function is a self-contained program that carries out some specific task.

  • Each C Program consists of one or more functions.

  • One of thes function must be main(). Program execution begin from main( ). And each function in program is called in the sequence specified by funcation call in main().

  • Additional functions will be subordinate to main().

  • After each function completes its task, control returns to main(). When all statements and other function calles completes, the program ends.


  • Function() consist of following components.

    1. Declaration.

    2. Definition

    3. Function call


  1. Declaration :

  • This part only specify type of function and type of arguments it takes.

  • Typicial type of function could be value returned by the function, it could be int, float, char.

  • If function does not return any value it will be void.


  1. Definition :

  • This is complete part of function. It consists of header and block of statements.

  • Header is same as declaration where as body contains executable statements.

  • Memory is allocated to function for definition and not for declaration.


  1. Function call :

  • A function can be accessed or called by specifying its names, followed by list of arguments, enclosed in ( ) brackets and separated by commas.

  • If function call does not require any arguments, it must be followed by empty ( ) brackets.

  • Each arguments if any must be in form of variable, constant or valid expression.

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