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Source Code
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#include <iostream>
#include <algorithm>
template <typename T>
void show(T d) {
unsigned char arr[sizeof(T)];
std::copy(reinterpret_cast<const unsigned char*>(&d),
reinterpret_cast<const unsigned char*>(&d) + sizeof(T),
&arr[0]
);
std::cout << d << ", size: " << sizeof(T) << "\n";
std::cout << std::hex ;
for (auto byte : arr) {
std::cout << +byte << ' ';
}
std::cout << "\n double: " << std::dec << d << ", int: " << (int)d << "\n-----------------\n";
}
int main()
{
double d = 99.98;
double x = 100 - d;
x *= 100;
show(x); // 2
show(2.0); // 2
show(100 - d); // 0.02
show(0.02); // 0.02
double d1 = 99.97;
d1 = 100 - d1;
d1 *= 100;
show(d1); //1
show(3.0); //1
}
Compiling Program...
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