C# Fundamentals - Basics of OOPS - Part 2

C# Fundamentals - Basics of OOPS - Part 2

• 1.
  iFour ConsultancyBasics of.NET https://www.ifourtechnolab.com/microsoft-technology
• 2.
  It is asymbol that tells the compiler to perform specific mathematical or logical manipulations. C# has rich set of built-in operators and provides the following types of operators • Arithmetic Operators • Relational Operators • Logical Operators • Bitwise Operators • Assignment Operators • Misc Operators Operators https://www.ifourtechnolab.com/microsoft-technology
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  Arithmetic Operators Operators (cont.) OperatorDescription Example(A=10,B=20) + Adds two operands A + B = 30 - Subtracts second operand from the first A - B = -10 * Multiplies both operands A * B = 200 / Divides numerator by de-numerator B / A = 2 % Modulus Operator and remainder of after an integer division B % A = 0 ++ Increment operator increases integer value by one A++ = 11 -- Decrement operator decreases integer value by one A-- = 9 https://www.ifourtechnolab.com/microsoft-technology
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  Relational Operators Operators (cont.) OperatorDescription Example(A=10,B=20) == Checks if the values of two operands are equal or not, if yes then condition becomes true (A == B) is not true. != Checks if the values of two operands are equal or not, if values are not equal then condition becomes true (A != B) is true > Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true (A > B) is not true < Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true (A < B) is true >= Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true (A >= B) is not true <= Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true (A <= B) is true https://www.ifourtechnolab.com/microsoft-technology
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  Logical Operators Operators (cont.) OperatorDescription Example (A=true,B=false) && Called Logical AND operator. If both the operands are non zero then condition becomes true (A && B) is false || Called Logical OR Operator. If any of the two operands is non zero then condition becomes true (A || B) is true ! Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false !(A && B) is true https://www.ifourtechnolab.com/microsoft-technology
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  Bitwise Operators Operators (cont.) OperatorDescription Example (A=60=00111100 B=13=00001101) & Binary AND Operator copies a bit to the result if it exists in both operands (A & B) = 12, 00001100 | Binary OR Operator copies a bit if it exists in either operand (A | B) = 61, 00111101 ^ Binary XOR Operator copies the bit if it is set in one operand but not both (A ^ B) = 49, 00110001 ~ Binary Ones Complement Operator is unary and has the effect of 'flipping' bits (~A ) = 61, which is 1100 0011 << Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand A << 2 = 240, which is 1111 0000 >> Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand A >> 2 = 15, which is 0000 1111 https://www.ifourtechnolab.com/microsoft-technology
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  Assignment Operators Operators (cont.) OperatorDescription Example = Binary AND Operator copies a bit to the result if it exists in both operands. C = A + B assigns value of A + B into C += Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand C += A is equivalent to C = C + A -= Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand C-=A is equivalent to C=C- A *= Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand C *= A is equivalent to C = C * A /= Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand C /= A is equivalent to C = C / A %= Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand C %= A is equivalent to C = C % A https://www.ifourtechnolab.com/microsoft-technology
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  Assignment Operators Operators (cont.) OperatorDescription Example <<= Left shift AND assignment operator C <<= 2 is same as C = C << 2 >>= Right shift AND assignment operator C >>= 2 is same as C = C >> 2 &= Bitwise AND assignment operator C &= 2 is same as C = C & 2 ^= bitwise exclusive OR and assignment operator C ^= 2 is same as C = C ^ 2 %= bitwise inclusive OR and assignment operator C |= 2 is same as C = C | 2 https://www.ifourtechnolab.com/microsoft-technology
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  Miscellaneous Operators sizeof() typeof() & * ? : Is as Operators(cont.) https://www.ifourtechnolab.com/microsoft-technology
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  Statement that determineswhether other statements will be executed • if statement decides whether to execute another statement, or decides which of two statements to execute • If -else :If the boolean expression evaluates to true, then the if block of code is executed, otherwise else block of code is executed • A switch statement decides which of several statements to execute • for loops are (typically) used to execute the controlled statement a given number of times. • The foreach statement repeats a group of embedded statements for each element in an array or an object collection that implements • while loops test whether a condition is true before executing the controlled statement • do-while loops test whether a condition is true after executing the controlled statement Control statements https://www.ifourtechnolab.com/microsoft-technology
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  Public • The publickeyword is an access modifier for types and type members. Public access is the most permissive access level • Accessibility: • Can be accessed by objects of the class • Can be accessed by derived classes Private • Private members are accessible only within the body of the class or the struct in which they are declared • Accessibility: • Cannot be accessed by object • Cannot be accessed by derived classes Access Modifiers https://www.ifourtechnolab.com/microsoft-technology
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  Protected • A protectedmember is accessible from within the class in which it is declared, and from within any class derived from the class that declared this member • Accessibility: • Cannot be accessed by object • By derived classes Internal • Access modifier for types and type members. We can declare a class as internal or its member as internal. Internal members are accessible only within files in the same assembly • Access is limited exclusively to classes defined within the current project assembly Access Modifiers https://www.ifourtechnolab.com/microsoft-technology
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  • Accessibility: • Insame assembly (public) • Can be accessed by objects of the class • Can be accessed by derived classes • In other assembly (internal) • Cannot be accessed by object • Cannot be accessed by derived classes Protected Internal • The protected internal accessibility means protected OR internal, not protected AND internal • In other words, a protected internal member is accessible from any class in the same assembly, including derived classes Access Modifiers https://www.ifourtechnolab.com/microsoft-technology
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  Thank You.. https://www.ifourtechnolab.com/microsoft-technology