| 68 | } |
| 69 | |
| 70 | public static void main(String[] args) { |
| 71 | int q = multiply(-5, -10); |
| 72 | System.out.println(q); |
| 73 | |
| 74 | for (int i = 0; i < 100; i++) { |
| 75 | int a = randomInt(10); |
| 76 | int b = randomInt(10); |
| 77 | int ans = minus(a, b); |
| 78 | if (ans != a - b) { |
| 79 | System.out.println("ERROR"); |
| 80 | } |
| 81 | System.out.println(a + " - " + b + " = " + ans); |
| 82 | } |
| 83 | for (int i = 0; i < 100; i++) { |
| 84 | int a = randomInt(10); |
| 85 | int b = randomInt(10); |
| 86 | int ans = multiply(a, b); |
| 87 | if (ans != a * b) { |
| 88 | System.out.println("ERROR"); |
| 89 | } |
| 90 | System.out.println(a + " * " + b + " = " + ans); |
| 91 | } |
| 92 | for (int i = 0; i < 100; i++) { |
| 93 | int a = randomInt(10) + 1; |
| 94 | int b = randomInt(10) + 1; |
| 95 | System.out.print(a + " / " + b + " = "); |
| 96 | int ans = divide(a, b); |
| 97 | if (ans != a / b) { |
| 98 | System.out.println("ERROR"); |
| 99 | } |
| 100 | System.out.println(ans); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | } |