Lecture02 computer applicationsie1_dratifshahzad
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Programming in C# for Engineering Students using Visual Studio 2017.
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Lecture02 computer applicationsie1_dratifshahzad
- 1. DR ATIF SHAHZAD Computer Applications in Industrial Engg.-I IE-322 LECTURE #02
- 2. Computer Applications in Industrial Engg.-I IE322
- 3. …Recap 1/16/2019 Dr.AtifShahzad • Page 1 • Interacting with Computers • What is Programming? – Programming Paradigms – Motivation & Extent • Object oriented programming – Motivation--Reuse – Concepts • .NET framework CLR as aVM Source Code Managed Code MSIL Executable JIT Compiler Machine Code Machine Language Assembly Language High-Level Language Inheritance Encapsulation Polymorphism
- 4. What we will see… 1/16/2019 Dr.AtifShahzad • Installation of VS2017 Community Edition on your System • IDEWalkthrough We will consider Windows Operating System ONLY
- 5. Meanwhile the installation progresses we will see… 1/16/2019 Dr.AtifShahzad • Program structure and sequence • Arithmetic operators • Formatted output • WriteLine(),Write(),ReadLine(),Read() • DataTypes – bool,byte,char,double,float,int,long,short,uint,ulong, ushort • Initialization of variables • Your Examples • Q&A
- 6. And… 1/16/2019 Dr.AtifShahzad • Escape Sequence • Comments,multi-line comments,Good practices • var keyword • Convert (data type conversion) • Strings • Operator precedence • Your Examples • Practice Quiz • Q&A
- 17. Creating a Console App IE322
- 21. C# ConsoleApp…Set its location 1/16/2019 Dr.AtifShahzad
- 25. Compiling a Console App IE322
- 28. F6 Compile the Solution • Build Solution F5 Run the solution • Start Debugging Ctrl+F5 Run the solution and pause screen • Start without Debugging Ctrl+Shift+S Save All Ctrl+W,S Solution Explorer 1/16/2019 Dr.AtifShahzad 28 Shortcut Keys
- 29. Opening a Console App IE322
- 41. Meanwhile the installation progresses we will see… IE322
- 42. Meanwhile the installation progresses we will see… 1/16/2019 Dr.AtifShahzad • Variables • DataTypes – bool,byte,char,double,float,int,long,short,uint,ulong, ushort • Program structure and sequence • Comments,multi-line comments,Good practices • WriteLine(),Write(),ReadLine(),Read() • Initialization of variables • Formatted output • Your Examples • Q&A
- 43. And… 1/16/2019 Dr.AtifShahzad • Arithmetic operators • Operator precedence • Escape Sequence • var keyword • Convert (data type conversion) • Strings • Your Examples • Practice Quiz • Q&A
- 44. Variables & Data types IE322
- 45. Variable 1/16/2019 Dr.AtifShahzad • A named area of computer memory. –think of it as a named box that stores data (including numbers and text) , for a program to access as needed.
- 46. Variable 1/16/2019 Dr.AtifShahzad • variable named side whose current value is 50.
- 47. Variable 1/16/2019 Dr.AtifShahzad When you create a variable, your program sets aside enough memory to hold the value of the variable And tags the allocated memory with that variable’s name. After creating a variable, you can use its name in your program to refer to the value it represents.
- 48. Data type of a variable Dr.AtifShahzad 48 Data types are sets (ranges) of values that have similar characteristics.
- 49. Data types Dr.AtifShahzad 49 DataTypes DefaultValue MinimumValue MaximumValue sbyte 0 -128 127 byte 0 0 255 short 0 -32768 32767 ushort 0 0 65535 int 0 -2147483648 2147483647 uint 0u 0 4294967295 long 0L -9223372036854775808 9223372036854775807 ulong 0u 0 18446744073709551615 float 0.0f ±1.5×10-45 ±3.4×1038 double 0.0d ±5.0×10-324 ±1.7×10308 decimal 0.0m ±1.0×10-28 ±7.9×1028 bool false Two possible values: true and false char 'u0000' 'u0000' 'uffff' object null - - string null - -
- 50. C#-- A quick code walkthrough 1/16/2019 Dr.AtifShahzad 50
- 51. A Quick question 1/16/2019 Dr.AtifShahzad Fill the blanks to have x equal 15
- 52. A Quick question 1/16/2019 Dr.AtifShahzad Fill the blanks to have x equal 15
- 54. An Example 1/16/2019 Dr.AtifShahzad 54 𝑥𝑥 = 𝑎𝑎 − 𝑏𝑏 3𝑐𝑐(𝑎𝑎 + 𝑐𝑐)
- 56. FormattingText withWriteLine Console.WriteLine(“{0}n{1}”, “This is my another Program”,“in C#”) 1/16/2019 Dr.AtifShahzad 56
- 57. Escape Sequence is an escape character n t r ” 1/16/2019 Dr.AtifShahzad 57
- 58. Reading some numeric data Console.Write(“Enter first number”); num1=Convert.ToInt32(Console.ReadLine()) 1/16/2019 Dr.AtifShahzad 58 where num1 already defined as a number
- 59. Data Conversion Convert.ToInt32() Convert.ToDouble() 1/16/2019 Dr.AtifShahzad 59 ToBoolean Converts a type to a Boolean value, where possible. ToByte Converts a type to a byte. ToChar Converts a type to a single Unicode character, where possible. ToDateTime Converts a type (integer or string type) to date-time structures. ToDecimal Converts a floating point or integer type to a decimal type. ToDouble Converts a type to a double type. ToInt16 Converts a type to a 16-bit integer. ToInt32 Converts a type to a 32-bit integer. ToInt64 Converts a type to a 64-bit integer. ToSbyte Converts a type to a signed byte type. ToSingle Converts a type to a small floating point number. ToString Converts a type to a string. ToType Converts a type to a specified type. ToUInt16 Converts a type to an unsigned int type. ToUInt32 Converts a type to an unsigned long type. ToUInt64 Converts a type to an unsigned big integer.
- 61. 1/16/2019 Dr.AtifShahzad 61 NEVER hesitate to contact should you have any question Dr.Atif Shahzad