Boolean in C

In C programming, a Boolean represents a binary state, typically used to indicate whether a condition is true or false. Although C does not have a built-in Boolean type, the concept of Boolean values is implemented using integer values.

Boolean Values in C

• True: A non-zero value, commonly represented by 1.
• False: A zero value, represented by 0.

Boolean Operations

In C, Boolean operations are performed using relational and logical operators. These operators allow comparisons and logical expressions to evaluate to true or false.

• Relational Operators: Operators such as ==, !=, <, >, etc. are used to compare values and return a Boolean result.
• Logical Operators: Operators such as && (AND), || (OR), and ! (NOT) are used to combine or negate Boolean expressions.

Examples of Boolean in C

                    
#include <stdio.h>
int main() 
{
  int isTrue = 1;    // 1 represents true
  int isFalse = 0;   // 0 represents false
            
  printf("isTrue: %d\n", isTrue);
  printf("isFalse: %d\n", isFalse);
            
  return 0;
}
                    
                

Boolean Logic Using Relational Operators

                    
#include <stdio.h>
int main() 
{
  int a = 5, b = 10;
  int result = (a < b);  // Relational operator returns true (1)
            
  printf("Is a less than b? %d\n", result);
            
  return 0;
}
                    
                

Boolean Logic Using Logical Operators

                    
#include <stdio.h>
int main() 
{
  int a = 5, b = 10;
  int result = (a < b) && (b > 0);  // Logical AND operator
            
  printf("Is a less than b and b greater than 0? %d\n", result);
            
  return 0;
}
                    
                

Negating a Boolean Expression

                    
#include <stdio.h>
int main() 
{
  int a = 5, b = 10;
  int result = !(a > b);  // Logical NOT operator
            
  printf("Is a greater than b? %d\n", !(a > b));
            
  return 0;
}