- C Introduction
- C - Features
- C - Applications
- C - Preprocessor
- C - Preprocessor Directives
- C - Type Definitions
- C - Function Prototypes
- C - Header Files and Libraries
- C - Main Function
- C Program Elements
- C - Datatypes
- C - Constants
- C - Operators
- C - Assignment Operator
- C - Arithmetic Operator
- C - Relational Operator
- C - Sample Program to illustrate C relational operator
- C - Logical Operator
- C - Sample Program to demonstrate logical operators
- C - Increment and Decrement Operator
- C - Sample Program to illustrate pre increment
- C - Sample Program to illustrate post increment
- C - Bitwise Operator
- C - Sample Program to illustrate bitwise Operator
- C - Conditional Operator
- C - Comma Operator
- C - Sizeof Operator
- C - Typecast Operator
- C - Operator Precedence and Associativity
- C - Identifiers
- C - Keywords
- C Statements
- C - if-else statement
- C - else-if ladder statement
- C - Switch statement
- C - Sample Program to illustrate switch statement
- C - While Statements
- C - Sample Program to illustrate while loop
- C - do-while Statement
- C - for Statement
- C - Sample Program to illustrate for-loop
- C - Break statement
- C - Continue statement
C - Sample Program to illustrate C relational operator
C Relational Operators - Sample Program
Introduction
In C, relational operators are used to compare values or variables. The result of relational operations is either true (1) or false (0). Relational operators are commonly used in conditional statements like if and loops to control the flow of the program.
Types of Relational Operators in C
Relational operators are used to compare two values. Here are the relational operators in C:
- Equal to (==) - Returns true if both operands are equal.
- Not equal to (!=) - Returns true if both operands are not equal.
- Greater than (>) - Returns true if the left operand is greater than the right operand.
- Less than (<) - Returns true if the left operand is less than the right operand.
- Greater than or equal to (>=) - Returns true if the left operand is greater than or equal to the right operand.
- Less than or equal to (<=) - Returns true if the left operand is less than or equal to the right operand.
Sample Program to Illustrate C Relational Operators
The following C program compares two integer variables using different relational operators. The results of these comparisons are displayed on the console:
Program Code
#include
int main() {
int a = 20, b = 10;
// Using the Equal to (==) operator
if (a == b) {
printf("a is equal to b\n");
} else {
printf("a is not equal to b\n");
}
// Using the Greater than (>) operator
if (a > b) {
printf("a is greater than b\n");
} else {
printf("a is not greater than b\n");
}
// Using the Less than (<) operator
if (a < b) {
printf("a is less than b\n");
} else {
printf("a is not less than b\n");
}
// Using the Greater than or equal to (>=) operator
if (a >= b) {
printf("a is greater than or equal to b\n");
} else {
printf("a is not greater than or equal to b\n");
}
// Using the Less than or equal to (<=) operator
if (a <= b) {
printf("a is less than or equal to b\n");
} else {
printf("a is not less than or equal to b\n");
}
return 0;
}
Explanation of the Program
In the program above, we define two integer variables, a = 20 and b = 10. We then compare these variables using different relational operators:
- The first if statement checks if a is equal to b. Since a (20) is not equal to b (10), it prints "a is not equal to b".
- The second if statement checks if a is greater than b. Since a (20) is greater than b (10), it prints "a is greater than b".
- The third if statement checks if a is less than b. Since a (20) is not less than b (10), it prints "a is not less than b".
- The fourth if statement checks if a is greater than or equal to b. Since a (20) is greater than b (10), it prints "a is greater than or equal to b".
- The fifth if statement checks if a is less than or equal to b. Since a (20) is not less than or equal to b (10), it prints "a is not less than or equal to b".
Expected Output
When the program is run, the following output will be displayed:
a is not equal to b
a is greater than b
a is not less than b
a is greater than or equal to b
a is not less than or equal to b
Explanation of the Output
- The first line shows that a is not equal to b (20 != 10).
- The second line confirms that a is greater than b (20 > 10).
- The third line confirms that a is not less than b (20 < 10 is false).
- The fourth line shows that a is greater than or equal to b (20 >= 10).
- The fifth line confirms that a is not less than or equal to b (20 <= 10 is false).
Relational operators in C allow us to compare values and make decisions based on conditions. In this program, we demonstrated how to use relational operators like ==, !=, >, <, >=, and <= to compare two integer variables. These operators are essential for implementing control structures such as if, else, loops, and other decision-making processes in C programs.
