Dev C 5.12 | Linux |

cout << fixed << setprecision(2);

if(n <= 0) { cout << "Invalid number of entries!\n"; return; } dev c 5.12

cout << "\n--- Advanced Calculator ---\n"; cout << "1. Power (x^y)\n"; cout << "2. Square Root\n"; cout << "3. Sine (sin)\n"; cout << "4. Cosine (cos)\n"; cout << "5. Tangent (tan)\n"; cout << "Enter your choice: "; cin >> choice; cout &lt;&lt; fixed &lt;&lt; setprecision(2); if(n &lt;= 0)