Trusted answers to developer questions

Onyejiaku Theophilus Chidalu

**Assignment operators** are used to assign a value to a variable. The left side operand of the assignment operator is a *variable* and the right side operand of the assignment operator is a *value*. For example, the expression
`C+=2`

simply means that `"C"`

is the *variable*, the `"+="`

is the *assignment operator*, and lastly the `"2"`

is the *value* assigned to the variable.

Assignment operators supported by C++ language are shown in the table below.

Operator | Description | Example |
---|---|---|

`=` |
Simple assignment operator. It assigns values from right operands to the left side operand | C=A+B will assign value of A+B into C |

`+=` |
Add AND assignment operator. It adds the right operand to the left operand and assigns the result to the left operand | C+=A is equivalent to C=C+A |

`-=` |
Subtract AND assignment operator. It subtracts the right operand from the left operand and assigns the result to the left operand. | C-=A is equivalent to C=C-A |

`*+` |
Multiply AND assignment operator. It multiplies the right operand with the left operand and assigns the result to the left operand. | C*=A is equivalent to C=C*A |

`/=` |
Divides AND assignment operator. It divides the left operand with the right operand and assigns the result to the left operand. | C/=A is equivalent to C=C/A |

`%=` |
Modulus AND assignment operator. It takes modulus using two operands and assigns the result to the left operand. | C%=A is equivalent to C=C%A |

`<<=` |
Left shift AND assignment operator. | C<<=2 is same as C=C<<2 |

`>>=` |
Right shift AND assignment operator | C=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 |

Let’s write a code to include all the assignment operators.

#include <iostream> using namespace std; int main() { int a=21; int c; // using the simple assignment operator c=a; cout << "Line 1: -= operator, value of c= "<<c<<endl; // using the add and assignment operator c+=a; cout << "Line 2: += operator, value of c= "<<c<<endl; // using the subtract and assignment operator c-=a; cout << "Line 3: -= operator, value of c= "<<c<<endl; // using the multiply and assignment operator c*=a; cout << "Line 4: *= operator, value of c= "<<c<<endl; // using the divide and assignment operator c/=a; cout << "Line 5: /= operator, value of c= "<<c<<endl; // lets give c another value c=200; // using the modulo and assignment operator c%=a; cout << "Line 6: %= operator, value of c= "<<c<<endl; // using the left shift and assignment operator c<<=2; cout << "Line 7: <<= operator, value of c= "<<c<<endl; // using the right shift and assignment operator c>>=2; cout << "Line 8: >>= operator, value of c= "<<c<<endl; // // using the bitwise and assignment operator c&=2; cout << "Line 9: &= operator, value of c= "<<c<<endl; // using the bitwise exclusive or and assignment operator c^=2; cout << "Line 10: ^= operator, value of c= "<<c<<endl; // using the bitwise inclusive or and assignment operator c|=2; cout << "Line 11: |= operator, value of c=: "<<c<<endl; return 0; }

- In line 9 in the program above
`c += a`

where`c=21`

and`c=a`

. - The given expression is the same as
`c = c + a`

, which arithmetically is`c = 21 + 21`

, hence the answer is`42`

. - This same technique applies to every other
present in the code.expression assignment operator - Taking a look at the table of operators with their descriptions and examples will make it easier to understand.

RELATED TAGS

c++

communitycreator

CONTRIBUTOR

Onyejiaku Theophilus Chidalu

RELATED COURSES

View all Courses

Keep Exploring

Related Courses