Non-decimal radices/Convert: Difference between revisions
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Line 63:
Put_line("1a (base 16) is decimal" & Integer'image(To_Decimal("1a", 16)));
end Number_Base_Conversion;</ada>
=={{header|C++}}==
<cpp>#include <limits>
#include <string>
#include <cassert>
std::string const digits = "0123456789abcdefghijklmnopqrstuvwxyz";
std::string to_base(unsigned long num, int base)
{
int const max_size = std::numeric_limits<char>::digits * sizeof(unsigned long);
char s[max_size + 1];
char* pos = s + max_size;
*pos = '\0';
if (num == 0)
{
*--pos = '0';
}
else
{
while (num > 0)
{
*--pos = digits[num % base];
num /= base;
}
}
return pos;
}
unsigned long from_base(std::string const& num_str, int base)
{
unsigned long result = 0;
for (std::string::size_type pos = 0; pos < num_str.length(); ++pos)
result = result * base + digits.find(num_str[pos]);
return result;
}</cpp>
=={{header|D}}==
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