Operators

Operators : Operators are used to perform operations on variables and values.

Types of Operators :

1. Arithmetic operators (+,-,*,/,%)
2. Increment Decrement Operators(++,--)
3. Assignment operators (=,+=,-=,*=,/=,%=)
4. Relational Operators (<,<=,>,>=,==,!=)
5. Logical operators (&&,||,!)
6. Bitwise operators (&,<<,>>,^,|,~)

Arithmetic Operators :

• Addition (+) : + is used to adding two numbers.

Example :

#include <stdio.h>

int main()
{
    int val1 = 20;
    int val2 = 30;
    int sum = val1 + val2;

    printf("Addition of val1 and val2 is %d",sum);

    return 0;
}

⚙️ Output :

Addition of val1 and val2 is 50

• Substraction (-) : - is used to subtract one value from another value.

Example :

#include <stdio.h>

int main()
{
    int val1 = 30;
    int val2 = 20;
    int sum = val1 - val2;

    printf("Substraction of val1 and val2 is %d",sum);

    return 0;
}

⚙️ Output :

Substraction of val1 and val2 is 10

• Multiplication (*) : * is used to multiplies two values.

Example :

#include <stdio.h>

int main() {

    int val1=20;
    int val2=30;
    int sum=val1*val2;

    printf("%d",sum);

    return 0;
}

⚙️ Output :

600

• Division (/) : Divides one value by another.

Example :

#include <stdio.h>

int main() {

   int val1=30;
   int val2=20;
   int sum=val1/val2;

   printf("%d",sum);

   return 0;
}

⚙️ Output :

1

• Modulus (%) : Returns the division remainder.

Example :

#include <stdio.h>

int main() {

   int result=11 % 4;

   printf("%d",result);

   return 0;
}

⚙️ Output :

3

Increment, Decrement Operator

Example :

#include <stdio.h>

int main() {

  int count=5;

  count=count + 1;

   printf("%d",count);

   return 0;
}

⚙️ Output :

6

In this example value increase by 1

Example :

#include <stdio.h>

int main() {

  int count=5;
  //count => 5
  printf("\n%d",count);

  count=count + 1;
  //count => 6
  printf("\n%d",count);

   count=count + 1;
   //count => 7
   printf("\n%d",count);
   return 0;
}

⚙️ Output :

5
6
7

In this example value decrease by 1

Example :

#include <stdio.h>

int main() {

   int count=5;
   //count => 5
   printf("\n%d",count);

   count=count - 1;
   //count => 4
   printf("\n%d",count);

    count=count - 1;
    //count => 3
    printf("\n%d",count);
    return 0;
}

⚙️ Output :

5
4
3

Increment Operator (++) : This Operator are used to increase the value of variable. By default, the value is incremented by 1.

Example :

#include <stdio.h>

int main() {

   int count=5;
   //count => 5
   printf("\n%d",count);

   count++;
   //count => 6
   printf("\n%d",count);

    count++;
    //count => 7
    printf("\n%d",count);
    return 0;
}

⚙️ Output :

5

6

7

Example :

#include <stdio.h>

int main() {

   int count=5;
   count =count+2;
    printf("\n%d",count);
    return 0;
}

⚙️ Output :

7

Type of Increment Operator

• Pre-Increment (++var)
• Post-Increment (var++)

Example :

#include <stdio.h>

int main() {

   int val1 = 0;
   val1++; //Post Increment
   printf("\n%d",val1);


   int val2 = 0;
   ++val2; //Pre Increment
   printf("\n%d",val2);

    return 0;
}

⚙️ Output :

1

1

Example :

#include <stdio.h>

int main() {

   int val1 = 0;

   int result = val1++;

   printf("\n%d",result);

   printf("\n%d",val1);
    return 0;
}

⚙️ Output :

0

1

Example :

#include <stdio.h>

int main() {

   int val1 = 0;

   int result = ++val1;

   printf("\n%d",result);

   printf("\n%d",val1);
    return 0;
}

⚙️ Output :

1

1

Decrement Operator (--) :This Operator are used to decrease the value of variable. By default, the value is Decremented by 1.

Example :

#include <stdio.h>

int main() {

   int count=5;
   //count => 5
   printf("\n%d",count);

   count--;
   //count => 4
   printf("\n%d",count);

    count--;
    //count => 3
    printf("\n%d",count);
    return 0;
}

⚙️ Output :

5

4

3

Example :

#include <stdio.h>

int main() {

   int count=5;
   count--;
   count--;
   count--;
    printf("\n%d",count);
    return 0;
}

⚙️ Output :

2

Type of Decrement Operator

• Pre-Decrement (--var)
• Post-Decrement (var--)

Example :

#include <stdio.h>

int main() {

   int val1 = 5;

   int result = val1--;

   printf("\n%d",result);

   printf("\n%d",val1);
    return 0;
}

⚙️ Output :

5

4

Example

#include <stdio.h>

int main() {

   int val1 = 5;

   int result = --val1;

   printf("\n%d",result);

   printf("\n%d",val1);
    return 0;
}

⚙️ Output :

4

4

Assignment Operators, Comparison Operators and Ternary Operator in C Programming

Assignment operators : Assignment operators applied to assign the result of an expression to a variable.

Assign (=)

Example :

 #include <stdio.h>

int main() {

    int a = 10;

    printf("%d",a);

    return 0;
}

⚙️ Output :

10

Add then assign (+=)

Example :

#include <stdio.h>

int main() {

    int a =5;

    a += 3; //a = a + 3;

    printf("%d",a);

    return 0;
}

Output :

8

Substract then assign (-=)

Example:

#include <stdio.h>

int main() {

    int a =5;

    a -= 3; //a = a - 3;

    printf("%d",a);

    return 0;
}

⚙️ Output :

2

Multiplies then assign (*=)

Example :

#include <stdio.h>

int main() {

    int a =5;

    a *= 3; //a = a * 3;

    printf("%d",a);

    return 0;
}

⚙️ Output :

15

Divides then assign (/=)

Example :

#include <stdio.h>

int main() {

    int a =10;

    a /= 2; //a = a / 2;

    printf("%d",a);

    return 0;
}

⚙️ Output :

5

Modulus then assign (%=)

Example :

#include <stdio.h>

int main() {

    int a =7;

    a %= 2; //a = a % 2;

    printf("%d",a);

    return 0;
}

⚙️ Output :

1

Comparison Operators

Equal to (==) : Equal to are used to compare to object.

Example :

// if value are not equal then print 0 means false.

#include <stdio.h>

int main() {

    int a = 5;
    int b = 10;

    int ans = (a==b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

0

Example :

// if value are equal then print 1 means true.

#include <stdio.h>

int main() {

    int a = 10;
    int b = 10;

    int ans = (a==b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

1

Greater than (>)

Example :

#include <stdio.h>

int main() {

    int a = 5;
    int b = 10;

    int ans = (a>b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

0

Example :

//a is greater than b then true.

#include <stdio.h>

int main() {

    int a = 5;
    int b = 2;

    int ans = (a>b);

    printf("%d",ans);

    return 0;
}

Output :

1

Less than (<)

Example :

#include <stdio.h>

int main() {

    int a = 20;
    int b = 10;

    int ans = (a<b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

0

Example :

// a is less than b then true .

#include <stdio.h>

int main() {

    int a = 10;
    int b = 20;

    int ans = (a,b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

1

Less than or equal to (<=)

Example :

// a is less than or equal to b then true otherwise false.

#include <stdio.h>

int main() {

    int a = 100;
    int b = 10;

    int ans = (a<=b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

0

Example :

// a is less than or equal to b then true.

#include <stdio.h>

int main() {

    int a = 10;
    int b = 10;

    int ans = (a<=b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

1

greater than or equal to (>=)

Example :

// a is greater than or equal to b then true otherwise false.

#include <stdio.h>

int main() {

    int a = 1;
    int b = 10;

    int ans = (a<=b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

0

Example :

// a is greater than or equal to b then true.

#include <stdio.h>

int main() {

    int a = 100;
    int b = 10;

    int ans = (a<=b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

1

not equal to (!=)

Example :

//a is not equal to b then true otherwise false.

#include <stdio.h>

int main() {

    int a = 10;
    int b = 10;

    int ans = (a!=b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

0

Example :

//a is not equal to b then true.

#include <stdio.h>

int main() {

    int a = 20;
    int b = 10;

    int ans = (a!=b);

    printf("%d",ans);

    return 0;
}

⚙️ Output :

1

Ternary Operator

Syntax :

(condition)?True:False

Example :

#include <stdio.h>

int main() {

    int a = 100;
    int b = 10;

    int ans = (a>b?a:b);

    printf("Ans = %d",ans);

    return 0;
}

⚙️ Output :

Ans = 100

Example :

#include <stdio.h>

int main() {

    int num;
    printf("Enter Number :");
    scanf("%d",&num);

    int ans = (num%2==0)?printf("Even"):printf("odd");

    return 0;
}

⚙️ Output :

Even

Logical Operator

Logical operator are used to chaining condition.

• Logical AND (&&)
• Logical OR (||)
• Logical Not (!)

Logical AND (&&) : If both conditions are true then it return result true, otherwise it returns false.

Example :

#include <stdio.h>

int main() {

   int maths = 80;
   int english = 70;

   int res = (maths>80) && (english>80);

   printf("Result: %d", res);
   return 0;
}

⚙️ Output :

Result : 1

Logical OR (||) : If both conditions are false it returns their result false, otherwisw its returns their result true.

Example :

#include <stdio.h>

int main() {

   int maths = 80;
   int english = 70;

   int res = (maths>80) || (english>80);

   printf("Result : %d", res);
   return 0;
}

⚙️ Output :

Result : 1

Logical Not (!) :

#include <stdio.h>

int main() {

   int maths = 80;
   int english = 70;

   int res = !((maths>80) && (english>80));

   printf("Result : %d", res);
   return 0;
}

⚙️ Output :

Result : 0