xtd 0.2.0
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random2.cpp

Shows how to use xtd::random class.

#include <xtd/console>
#include <xtd/random>
using namespace xtd;
using namespace xtd::collections::generic;
auto main() -> int {
// Instantiate random number generator using system-supplied value as seed.
auto rand = xtd::random {};
// Generate and display 5 random byte (integer) values.
auto bytes = list<unsigned char>(5);
rand.next_bytes(bytes);
console::write_line("Five random byte values:");
for (auto byte_value : bytes)
console::write("{, 5}", byte_value);
console::write_line();
// Generate and display 5 random integers.
console::write_line("Five random integer values:");
for (auto ctr = 0; ctr <= 4; ctr++)
console::write("{, 15}", rand.next());
console::write_line();
// Generate and display 5 random integers between 0 and 100.//
console::write_line("Five random integers between 0 and 100:");
for (auto ctr = 0; ctr <= 4; ctr++)
console::write("{, 10}", rand.next(101));
console::write_line();
// Generate and display 5 random integers from 50 to 100.
console::write_line("Five random integers between 50 and 100:");
for (auto ctr = 0; ctr <= 4; ctr++)
console::write("{, 10}", rand.next(50, 101));
console::write_line();
// Generate and display 5 random floating point values from 0 to 1.
console::write_line("Five Doubles:");
for (auto ctr = 0; ctr <= 4; ctr++)
console::write("{, 10}", rand.next_double());
console::write_line();
// Generate and display 5 random floating point values from 0 to 5.
console::write_line("Five Doubles between 0 and 5:");
for (auto ctr = 0; ctr <= 4; ctr++)
console::write("{, 10}", rand.next_double() * 5);
console::write_line();
}
// This code can produce the following output :
//
// Five random byte values:
// 150 243 92 141 0
// Five random integer values:
// 4.14343E+08 2.14086E+09 1.73486E+09 1.88133E+09 1.69685E+09
// Five random integers between 0 and 100:
// 35 86 86 68 10
// Five random integers between 50 and 100:
// 76 57 66 97 56
// Five Doubles:
// 0.211096 0.172007 0.507414 0.48576 0.754658
// Five Doubles between 0 and 5:
// 1.40691 2.7078 3.87732 1.0691 0.478343
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search...
Definition list.h:71
Represents a pseudo-random number generator, a device that produces a sequence of numbers that meet c...
Definition random.h:40
The xtd::collections::generic namespace contains interfaces and classes that define generic collectio...
Definition comparer.h:15
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition xtd_about_box.h:10