Visual C++ - Convert Numbers to Text (Words)
There might be some cases where we need to display the numbers as text. For example, given the input as 115 and output would be One Hundred Fifteen.
I have given here the code to display the numbers upto 100,000. If you want more limit, you can keep extending the program.
Source Code
#include <iostream>
bool HelperConvertNumberToText(int num, char *buf, int len)
{
static char *strones[] = {
"One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight",
"Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen",
"Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen",
};
static char *strtens[] = {
"Ten", "Twenty", "Thirty", "Fourty", "Fifty", "Sixty",
"Seventy", "Eighty", "Ninety", "Hundred"
};
int single, tens, hundreds;
if(num > 1000)
return false;
hundreds = num / 100;
num = num - hundreds * 100;
if( num < 20)
{
tens = 0; // special case
single = num;
}
else
{
tens = num / 10;
num = num - tens * 10;
single = num;
}
char result[1024];
memset(result, 0, 1024);
if(hundreds > 0)
{
strcat(result, strones[hundreds-1]);
strcat(result, " Hundred ");
}
if(tens > 0)
{
strcat(result, strtens[tens-1]);
strcat(result, " ");
}
if(single > 0)
{
strcat(result, strones[single-1]);
strcat(result, " ");
}
if(len > strlen(result))
strcpy(buf, result);
return true;
}
bool ConvertNumberToText(int num, char *buf, int len)
{
if(num < 0 || num > 100000)
{
std::cout << num << " \t Not Supported\n";
return false;
}
if( num == 0)
{
std::cout << num << " \t Zero\n";
return false;
}
char tres[1024];
char result[1024];
memset(result, 0, 1024);
if(num < 1000)
{
HelperConvertNumberToText(num, (char*) &tres, 1024);
strcat(result, tres);
}
else
{
int thousands;
thousands = num / 1000;
int temp = num - thousands * 1000;
HelperConvertNumberToText(thousands, (char*) &tres, 1024);
strcat(result, tres);
strcat(result, "Thousand ");
HelperConvertNumberToText(temp, (char*) &tres, 1024);
strcat(result, tres);
}
if(len > strlen(result))
strcpy(buf, result);
return true;
}
int main()
{
int len = 1024;
char result[1024];
static int arrNum[] =
{
-1, 0, 5, 10, 15, 19, 20, 21, 25, 33, 49, 50, 72,
99, 100, 101, 117, 199, 200, 214, 517, 589, 999,
1000, 1010, 1018, 1200, 9890, 10119, 13535, 57019,
99999, 100000, 100001
};
for(int i = 0; i < sizeof(arrNum) / sizeof(int); i++)
{
int num = arrNum[i];
if( ConvertNumberToText(num, result, len) == true)
std::cout << num << " \t " << result << "\n";
}
return 0;
}
Output
-1 Not Supported
0 Zero
5 Five
10 Ten
15 Fifteen
19 Nineteen
20 Twenty
21 Twenty One
25 Twenty Five
33 Thirty Three
49 Fourty Nine
50 Fifty
72 Seventy Two
99 Ninety Nine
100 One Hundred
101 One Hundred One
117 One Hundred Seventeen
199 One Hundred Ninety Nine
200 Two Hundred
214 Two Hundred Fourteen
517 Five Hundred Seventeen
589 Five Hundred Eighty Nine
999 Nine Hundred Ninety Nine
1000 One Thousand
1010 One Thousand Ten
1018 One Thousand Eighteen
1200 One Thousand Two Hundred
9890 Nine Thousand Eight Hundred Ninety
10119 Ten Thousand One Hundred Nineteen
13535 Thirteen Thousand Five Hundred Thirty Five
57019 Fifty Seven Thousand Nineteen
99999 Ninety Nine Thousand Nine Hundred Ninety Nine
100000 One Hundred Thousand
100001 Not Supported
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