Operators in C++

//C++ Example of Operation Precedence and Associativity
#include<iostream>
using namespace std;

int main(){
    
    int a = 2, b = 4, c = 6, d = 8;

    /*
    all operators are of same precedence so
    follow associativity rules 
    (solve the expression from Left to Right)
    */ 
    cout<<"a * b / c = "<<(a * b / c)<<endl;

    /*
    operators with high precedence like * and % 
    will be solve first then operators with low 
    precedence will be solve
    */
   cout<<"a + b * d - c % a = "<<(a + b * d - c % a)<<endl;

    return 0;
}

a * b / c = 1
a + b * d - c % a = 34

Note: All Operators are not use with all data types like modulo operator (%) cannot be used with floating data type. (alert-warning)

2. Increment / Decrement Operators. 

//C++ Example of Increment/Decrement Operators
#include<iostream>
using namespace std;

int main(){
    
    int a = 6, b = 10, c = 8, d = 2;

    //pre-increment
    cout<<"++a = "<<++a<<endl;

    //post-increment
    cout<<"b++ = "<<b++<<endl;
    cout<<"b = "<<b<<endl;
    //pre-decrement
    cout<<"--c = "<<--c<<endl;

    //post-decrement
    cout<<"d-- = "<<d--<<endl;
    cout<<"d = "<<d<<endl;
    return 0;
}

++a = 7
b++ = 10

b = 11
--c = 7
d-- = 2

d = 1

//C++ Example of Relational Operators
#include<iostream>
using namespace std;

int main(){

    int a = 5, b = 10;
    bool check;

    //equal to
    check = (a == b);
    cout<<"a == b is "<<check<<endl;

    //not equal to
    check = (a != b);
    cout<<"a != b is "<<check<<endl;

    //less than or equal to
    check = (a <= b);
    cout<<"a <= b is "<<check<<endl;

    //greater than or equal to
    check = (a >= b);
    cout<<"a >= b is "<<check<<endl;

    //less than
    check = (a < b);
    cout<<"a < b is "<<check<<endl;

    //greater than
    check = (a > b);
    cout<<"a > b is "<<check<<endl;

    return 0;
}

a == b is 0
a != b is 1
a <= b is 1
a >= b is 0
a < b is 1
a > b is 0

//C++ Example of Logical Operators
#include<iostream>
using namespace std;

int main(){

    int a = 5, b = 10, c = 4;
    bool check;

    //AND 
    check = (a > b) && (a > c);
    cout<<"Expression1 && Expression1 is "<<check<<endl;

    //OR
    check = (a > b) || (a > c);
    cout<<"Expression1 || Expression1 is "<<check<<endl;

    //NOT
    check = (!(b > c));
    cout<<"!(Expression) is "<<check<<endl;

    return 0;
}

Expression1 && Expression1 is 0
Expression1 || Expression1 is 1
!(Expression) is 0

• (5 > 10) is false and (5 > 4) is true, as we used logical AND (&&) which means if any one condition is false it will return False (0).
• (5 > 10) is false and (5 > 4) is true, as we used logical OR (||) it means even if any one condition is true it will return True (1). 
• (10 > 4) is true and we used logical NOT so it will always return the opposite that is false.

5. Bitwise Operators.

6. Assignment Operators.

Example:
int a = 10;
a += 5; //equivalent to a = a + 5 = 10 + 5 = 15

//C++ Example of Assignment Operators
#include<iostream>
using namespace std;

int main(){

    int a = 5, b = 10, c = 4;
    bool check;

    a += b; // equivalent to a = a + b
    cout<<"a = "<<a<<endl;

    c *= b; //equivalent to c = c * b
    cout<<"c = "<<c<<endl; 

    return 0;
}

a = 15
c = 40

//C++ Example of Conditional Operators
#include<iostream>
using namespace std;

int main(){

    int a = 5, b = 10;
    //ternary operator
    int result = (a < b) ? a : b;
    cout<<"The smallest number: "<<result<<endl;

    return 0;
}

The smallest number: 5