comparison operators

Author: theunicorndev237

002-variable-and-types.sol

@@ -15,7 +15,7 @@ pragma solidity >=0.7.0 <0.9.0;
 // walletAmount = integer, total amount in users wallet
 // errorMessage = a string containing a description of what went wrong
 
-contract learnVariables {
+contract LearnVariables {
     // our solidity code
 
     // declaring an integer variable

003-functions-in-solidity.sol

@@ -10,7 +10,7 @@ pragma solidity >=0.7.0 <0.9.0;
 // A function is a group of code that can be called anywhere within your program
 // Eliminating the possibility of writing thesame block of code many times
 
-contract learnFunctions {
+contract LearnFunctions {
     // syntax
     // function functionName(parameter list) scope returns(return type) { statements }
 

004-decision-making.sol

@@ -8,7 +8,7 @@ pragma solidity >=0.7.0 <0.9.0;
  * based on certain conditions or decision made
  */
 
-contract learnDecisionMaking {
+contract LearnDecisionMaking {
     // orange variable
     uint256 oranges = 5;
 

005-variables-and-scope.sol

@@ -6,7 +6,7 @@ pragma solidity >=0.7.0 <0.9.0;
  * Learn about variables and scope
  */
 
-contract learnVariableAndScope {
+contract LearnVariableAndScope {
     // state variable
     uint256 public data = 10;
 

006-arithmetic-operators.sol

@@ -4,12 +4,12 @@ pragma solidity >=0.7.0 <0.9.0;
 
 /**
  * Learn about arithmetic operators in solidity
- * operators tell the compiler to perform specific
+ * Intro - Operators tell the compiler to perform specific
  * mathematical operation, logical or relational
  * operation and produce a suitable response
  */
 
-contract learnArithmeticOperators {
+contract LearnArithmeticOperators {
     uint256 public a = 5;
     uint256 public b = 10;
 

007-comparison-operators.sol

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-3.0
+
+pragma solidity >=0.7.0 <0.9.0;
+
+/**
+ * Comparison operators
+ */
+
+contract ComparisonOperators {
+    uint256 public a = 5;
+    uint256 public b = 10;
+
+    function compareEquality() public view returns (bool) {
+        return a == b; // evaluates to a boolean: true or false
+        // return a != b; // not equal to
+    }
+
+    function compareValues() public view returns (bool) {
+        if (a > b) {
+            return true;
+        }
+        return false;
+    }
+
+    // require function
+    function compareValuesUsingRequire() public view {
+        require(a > b, "This is false.");
+    }
+
+    function compareGreaterOrEqual() public view {
+        require(a >= b, "This is false.");
+    }
+}