From f70acc8a3371a53bec4b720f24a2dab713f4827e Mon Sep 17 00:00:00 2001
From: Flatlogic Bot <support@flatlogic.com>
Date: Fri, 6 Mar 2026 00:19:52 +0000
Subject: [PATCH] 8

---
 frontend/src/pages/calculator.tsx | 44 ++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 18 deletions(-)

diff --git a/frontend/src/pages/calculator.tsx b/frontend/src/pages/calculator.tsx
index 778248c..9b6c7aa 100644
--- a/frontend/src/pages/calculator.tsx
+++ b/frontend/src/pages/calculator.tsx
@@ -17,29 +17,36 @@ const CalculatorPage = () => {
   const [operation, setOperation] = useState<'+' | '-' | '*' | '/' | 'AND' | 'OR' | 'XOR'>('+')
   const [result, setResult] = useState<string | null>(null)
   const [activeInput, setActiveInput] = useState<'val1' | 'val2'>('val1')
+  const [isSequential, setIsSequential] = useState(false)
 
   const baseMap = { hex: 16, dec: 10, oct: 8, bin: 2 }
 
+  const calculate = (v1: string, v2: string, op: string) => {
+    const num1 = parseInt(v1, baseMap[base])
+    const num2 = parseInt(v2, baseMap[base])
+    let res: number
+    switch(op) {
+      case '+': res = num1 + num2; break
+      case '-': res = num1 - num2; break
+      case '*': res = num1 * num2; break
+      case '/': res = num1 / num2; break
+      case 'AND': res = num1 & num2; break
+      case 'OR': res = num1 | num2; break
+      case 'XOR': res = num1 ^ num2; break
+      default: res = num1
+    }
+    return res.toString(baseMap[base]).toUpperCase()
+  }
+
   const handleCalculate = () => {
     try {
-      const v1 = parseInt(val1, baseMap[base])
-      const v2 = parseInt(val2, baseMap[base])
-      
-      if (isNaN(v1) || (val2 && isNaN(v2))) throw new Error('Invalid input')
-      
-      let res: number
-      switch(operation) {
-        case '+': res = v1 + v2; break
-        case '-': res = v1 - v2; break
-        case '*': res = v1 * v2; break
-        case '/': res = v1 / v2; break
-        case 'AND': res = v1 & v2; break
-        case 'OR': res = v1 | v2; break
-        case 'XOR': res = v1 ^ v2; break
-        default: res = v1
+      const res = calculate(val1, val2, operation)
+      setResult(res)
+      if (isSequential) {
+        setVal1(res)
+        setVal2('')
+        setActiveInput('val2')
       }
-      
-      setResult(res.toString(baseMap[base]).toUpperCase())
     } catch (e) {
       alert('Error: Invalid calculation')
     }
@@ -72,6 +79,7 @@ const CalculatorPage = () => {
             {(['hex', 'dec', 'oct', 'bin'] as const).map(b => (
               <BaseButton key={b} color={base === b ? 'info' : 'light'} label={b.toUpperCase()} onClick={() => { setBase(b); setVal1(''); setVal2(''); setResult(null); }} />
             ))}
+            <BaseButton color={isSequential ? 'success' : 'light'} label="Sequential Mode" onClick={() => setIsSequential(!isSequential)} />
           </div>
           <div className="flex gap-4 mb-4">
             <div className="flex-1 cursor-pointer p-2 border-2 rounded" onClick={() => setActiveInput('val1')} style={{ borderColor: activeInput === 'val1' ? '#53F6C7' : '#ccc' }}>
@@ -114,4 +122,4 @@ const CalculatorPage = () => {
 
 CalculatorPage.getLayout = (page: ReactElement) => <LayoutAuthenticated>{page}</LayoutAuthenticated>
 
-export default CalculatorPage
\ No newline at end of file
+export default CalculatorPage