Comparison Operators
Part of the Fundamentals section of Coddy's C++ journey — lesson 21 of 74.
Comparison operators are used to compare between two operands.
Sometimes we need to check whether an operand is bigger/smaller/... than another operand. The following table shows possible operators for comparison:
| Operator | Meaning | Example |
|---|---|---|
| == | Equal | 1 == 2 returns false |
| != | Not Equal | 1 != 2 returns true |
| > | Greater Than | 1 > 2 returns false |
| < | Lower Than | 1 < 2 returns true |
| >= | Greater or Equal | 1 >= 2 returns false |
| <= | Lower or Equal | 1 <= 2 returns true |
The comparison operator returns true if the comparison is correct or false otherwise.
For example:
int var1 = 13;
int var2 = 12;
bool var3 = var1 != var2;var3 will hold true because var1 and var2 are not equal
Remember the
booltype,var3is a bool.
Challenge
BeginnerWrite a script that initializes 2 variables n1 and n2 with the values 8 and 9 (accordingly).
After that initialize another variable n3 that will hold whether n1 is bigger than n2.
Cheat sheet
Comparison operators are used to compare between two operands and return true or false:
| Operator | Meaning | Example |
|---|---|---|
| == | Equal | 1 == 2 returns false |
| != | Not Equal | 1 != 2 returns true |
| > | Greater Than | 1 > 2 returns false |
| < | Lower Than | 1 < 2 returns true |
| >= | Greater or Equal | 1 >= 2 returns false |
| <= | Lower or Equal | 1 <= 2 returns true |
Example usage:
int var1 = 13;
int var2 = 12;
bool var3 = var1 != var2; // var3 will hold trueTry it yourself
#include <iostream>
int main() {
// Type your code below
// Don't change the line below
std::cout << "n1 = " << n1 << ", n2 = " << n2 << ", n3 = " << n3 << std::endl;
return 0;
}This lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Fundamentals
4Operators Part 1
Arithmetic OperatorsModulo OperatorIncrement/DecrementPost Increment/DecrementArithmetic ShortcutsComparison OperatorsString Comparison3Variables Part 2
Type DeclarationNaming ConventionsRecap - Initialize VariablesType Casting Part 1Type Casting Part 26Decision Making
If StatementIf - ElseSwitch StatementConditional OperatorRecap - If ElseNested If - Else