refactoring: if-statement1

src/main/c/Calculator/calculator.c

@@ -19,132 +19,19 @@ double combination(int n, int r);
             displayMenu();
             printf("Enter your choice: ");
             scanf("%d", &choice);
-        switch (choice) {
-                    case 1:
-                    printf("Enter two numbers: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    result = add(num1, num2);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 2:
-                    printf("Enter two numbers: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    result = subtract(num1, num2);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 3:
-                    printf("Enter two numbers: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    result = multiply(num1, num2);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 4:
-                    printf("Enter two numbers: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    if (num2 == 0) {
-                        printf("Error: Division by zero\n");
-                    } else {
-                        result = divide(num1, num2);
-                        printf("Result: %lf\n", result);
-                    }
-                    break;
-                    case 5:
-                    printf("Enter base and exponent: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    result = exponent(num1, num2);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 6:
-                    printf("Enter two numbers: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    result = modulus(num1, num2);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 7:
-                    printf("Enter a number: ");
-                    scanf("%lf", &num1);
-                    result = logarithm(num1);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 8:
-                    printf("Enter base and exponent: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    result = potential(num1, num2);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 9:
-                    printf("Enter a number: ");
-                    scanf("%lf", &num1);
-                    result = squareRoot(num1);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 10:
-                    printf("Enter a number: ");
-                    scanf("%lf", &num1);
-                    result = square(num1);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 11:
-                    printf("Enter angle in degrees: ");
-                    scanf("%lf", &angle);
-                    result = sine(angle);
-                    printf("Sine of %.2lf degrees: %lf\n", angle, result);
-                    break;
-                    case 12:
-                    printf("Enter angle in degrees: ");
-                    scanf("%lf", &angle);
-                    result = cosine(angle);
-                    printf("Cosine of %.2lf degrees: %lf\n", angle, result);
-                    break;
-                    case 13:
-                    printf("Enter angle in degrees: ");
-                    scanf("%lf", &angle);
-                    result = tangent(angle);
-                    printf("Tangent of %.2lf degrees: %lf\n", angle, result);
-                    break;
-                    case 14:
-                    printf("Enter n and r: ");
-                    scanf("%d %d", &n, &r);
-                    result = permutation(n, r);
-                    printf("Permutation of %d and %d: %lf\n", n, r, result);
-                    break;
-                    case 15:
-                    printf("Enter n and r: ");
-                    scanf("%d %d", &n, &r);
-                    result = combination(n, r);
-                    printf("Combination of %d and %d: %lf\n", n, r, result);
-                    break;
-                    case 16:
-                    printf("Enter a number: ");
-                    scanf("%lf", &num1);
-                    result = cube(num1);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 17:
-                    printf("Enter a number: ");
-                    scanf("%lf", &num1);
-                    result = cubeRoot(num1);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 18:
-                    printf("Enter a number: ");
-                    scanf("%lf", &num1);
-                    result = factorial(num1);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 19:
-                    printf("Enter base and exponent: ");
-                    scanf("%lf %lf", &num1, &num2);
-                    result = power(num1, num2);
-                    printf("Result: %lf\n", result);
-                    break;
-                    case 20:
-                    printf("Exiting...\n");
-                    break;
-                default:
-                    printf("Invalid choice\n");
+          if (choice >= 1 && choice <= 19) {
+            if (choice >= 9 && choice <= 17) {
+                num1 = getDoubleInput("Enter a number: ");
+            } else if (choice >= 1 && choice <= 8) {
+                printf("Enter two numbers: ");
+                scanf("%lf %lf", &num1, &num2);
+            } else if (choice == 18 || choice == 19) {
+                int n = getIntInput("Enter n: ");
+                int r = getIntInput("Enter r: ");
+                num1 = n;
+                num2 = r;
             }
-        }
+                  
         while (choice != 20);
 
         return 0;