[C++] The hard way - a lot of string manipulation[C++] The hard way - a lot of string manipulation
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Week 11, 2026
#include
#include
#include
#include
#include
#include
using namespace std;
void strev(char *str);
char* fromDeciCh(char res[], int base, int inputNum);
char reVal(int num);
string fromDeciStr(string& res, int base, int inputNum);
int SetNextIncr(int incr);
int main()
{
int base = 36;
char res[100];
string resStr = "";
int inputNum = 0;
int increment = 0;
string incrStr = "";
string returnDeclStr;
string altstr = "";
int strlength = 0;
for(int second = 0; second < 2611; second++)
{
increment = second;
incrStr = fromDeciStr(resStr, base, second);
strlength = strlen(incrStr.c_str());
if( second == 0)
{
cout << "0: 000\n";
}
else
{
if(strlength == 1)
{
altstr = to_string(second) + ": 00" + incrStr + "\n";
cout << altstr;
}
else if(strlength == 2)
{
altstr = to_string(second) + ": 0" + incrStr + "\n";
cout << altstr;
}
else
{
cout << second << ": " << incrStr << "\n";
}
}
resStr = "";
for(int first = 0; first < 18; first++)
{
increment = SetNextIncr(increment);
if(increment < 46656)
{
inputNum = increment;
cout << increment << ": ";
returnDeclStr = fromDeciStr(resStr, base, inputNum);
cout << returnDeclStr << "\n";
resStr = "";
}
}
}
return 0;
}
//-----------------------------------------------------------
void strev(char *str)
{
int len = strlen(str);
int i;
for (i = 0; i < len/2; i++)
{
char temp = str[i];
str[i] = str[len-i-1];
str[len-i-1] = temp;
}
}
//----------------------------------------------------------
char reVal(int num)
{
if (num >= 0 && num <= 9)
return (char)(num + '0');
else
return (char)(num - 10 + 'A');
}
//---------------------------------------------------------
string fromDeciStr(string& res, int base, int inputNum)
{
int index = 0;
while (inputNum > 0) {
res.push_back(reVal(inputNum % base));
index++;
inputNum /= base;
}
reverse(res.begin(), res.end());
return res;
}
//---------------------------------------------------------
int SetNextIncr(int incr)
{
int inc = incr + 2611;
return inc;
}
