74 lines
1.6 KiB
Java
74 lines
1.6 KiB
Java
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//: operators/MathOps.java
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// <20>2015 MindView LLC: see Copyright.txt
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// Demonstrates the mathematical operators.
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import java.util.*;
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import static com.mindviewinc.util.Print.*;
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public class MathOps {
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public static void main(String[] args) {
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// Create a seeded random number generator:
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Random rand = new Random(47);
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int i, j, k;
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// Choose value from 1 to 100:
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j = rand.nextInt(100) + 1;
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print("j : " + j);
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k = rand.nextInt(100) + 1;
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print("k : " + k);
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i = j + k;
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print("j + k : " + i);
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i = j - k;
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print("j - k : " + i);
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i = k / j;
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print("k / j : " + i);
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i = k * j;
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print("k * j : " + i);
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i = k % j;
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print("k % j : " + i);
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j %= k;
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print("j %= k : " + j);
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// Floating-point number tests:
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float u, v, w; // Applies to doubles, too
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v = rand.nextFloat();
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print("v : " + v);
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w = rand.nextFloat();
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print("w : " + w);
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u = v + w;
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print("v + w : " + u);
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u = v - w;
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print("v - w : " + u);
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u = v * w;
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print("v * w : " + u);
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u = v / w;
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print("v / w : " + u);
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// The following also works for char,
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// byte, short, int, long, and double:
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u += v;
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print("u += v : " + u);
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u -= v;
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print("u -= v : " + u);
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u *= v;
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print("u *= v : " + u);
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u /= v;
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print("u /= v : " + u);
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}
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} /* Output:
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j : 59
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k : 56
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j + k : 115
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j - k : 3
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k / j : 0
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k * j : 3304
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k % j : 56
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j %= k : 3
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v : 0.5309454
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w : 0.0534122
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v + w : 0.5843576
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v - w : 0.47753322
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v * w : 0.028358962
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v / w : 9.940527
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u += v : 10.471473
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u -= v : 9.940527
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u *= v : 5.2778773
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u /= v : 9.940527
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*///:~
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