C Operators

C operators perform mathematical, logical, and bit-level operations on variables and values. They are symbols that tell the compiler to perform specific mathematical or logical operations.

The different types of operators in C include:

• Arithmetic operators
• Relational operators
• Logical operators
• Bitwise operators
• Assignment operators
• Misc operators

C Arithmetic Operators

C has these basic arithmetic operators to perform common mathematical operations:

C Arithmetic Operators Example

This example demonstrates the usage of arithmetic operators in C:

#include <stdio.h>

int main() {
  int a = 10, b = 3;
  printf("Addition: %d\n", a + b);
  printf("Subtraction: %d\n", a - b);
  printf("Multiplication: %d\n", a * b);
  printf("Division: %d\n", a / b);
  printf("Modulo: %d\n", a % b);
  printf("Increment: %d\n", ++a);
  printf("Decrement: %d\n", --b);
  return 0;
}

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Here is the output:

Addition: 13
Subtraction: 7
Multiplication: 30
Division: 3
Modulo: 1
Increment: 11
Decrement: 2

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C Relational Operators

C relational operators compare two values and return true or false:

C Relational Operators Example

This example demonstrates the usage of relational operators in C:

#include <stdio.h>

int main() {
  int a = 10, b = 5;
  printf("a == b: %d\n", a == b);
  printf("a != b: %d\n", a != b);
  printf("a > b: %d\n", a > b);
  printf("a < b: %d\n", a < b);
  printf("a >= b: %d\n", a >= b);
  printf("a <= b: %d\n", a <= b);
  return 0;
}

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Here is the output:

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

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C Logical Operators

C logical operators operate on Boolean values and return Boolean values:

C Logical Operators Example

This example demonstrates the usage of logical operators in C:

#include <stdio.h>

int main() {
  int a = 1, b = 0;
  printf("a && b: %d\n", a && b);
  printf("a || b: %d\n", a || b);
  printf("!a: %d\n", !a);
  return 0;
}

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Here is the output:

a && b: 0
a || b: 1
!a: 0

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C Bitwise Operators

C bitwise operators manipulate individual bits in an integer:

C Bitwise Operators Example

This example demonstrates the usage of bitwise operators in C:

#include <stdio.h>

int main() {
  int a = 5, b = 3;  // 5 = 0101, 3 = 0011
  printf("a & b: %d\n", a & b);
  printf("a | b: %d\n", a | b);
  printf("a ^ b: %d\n", a ^ b);
  printf("~a: %d\n", ~a);
  printf("a << 1: %d\n", a << 1);
  printf("a >> 1: %d\n", a >> 1);
  return 0;
}

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Here is the output:

a & b: 1
a | b: 7
a ^ b: 6
~a: -6
a << 1: 10
a >> 1: 2

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C Assignment Operators

C assignment operators assign the value on the right to the variable on the left:

C Assignment Operators Example

This example demonstrates the usage of assignment operators in C:

#include <stdio.h>

int main() {
  int a = 5;
  a += 3;  // a = a + 3
  printf("a += 3: %d\n", a);
  a -= 2;
  printf("a -= 2: %d\n", a);
  a *= 4;
  printf("a *= 4: %d\n", a);
  a /= 3;
  printf("a /= 3: %d\n", a);
  a %= 3;
  printf("a %%= 3: %d\n", a);
  return 0;
}

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Here is the output:

a += 3: 8
a -= 2: 6
a *= 4: 24
a /= 3: 8
a %= 3: 2

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C Misc Operators

C misc operators don’t fit into a particular category:

C Misc Operators Example

This example demonstrates the usage of some of these operators in C:

#include <stdio.h>

int main() {
  int a = 10;
  int *p = &a;

  printf("Address of a: %p\n", &a);
  printf("Value of a using pointer: %d\n", *p);

  int b = (a > 5) ? 100 : 200;
  printf("Ternary result: %d\n", b);

  return 0;
}

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Here is the output:

Address of a: 0x7ffdcb92c540
Value of a using pointer: 10
Ternary result: 100

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Frequently Asked Questions

1. What is the difference between == and = in C?

• = is the assignment operator (e.g., x = 5; assigns value 5 to x).
• == is the equality operator used to compare two values (e.g., x == y checks if x equals y).

2. What is the difference between C && and & operator?

• C && is a logical AND operator: It returns true if both conditions are true.
• C & is a bitwise AND operator: It performs an AND operation bit-by-bit.

3. Can I use arithmetic operators on characters in C?

Yes. Characters in C are stored as ASCII values, so arithmetic operations like 'A' + 1 are valid and return 'B'.