convert Dec number to Binary number

Is there any simple function or code which can convert a decimal number to a binary number as a string or char array?

i.e. I want to do this:
char binresult[8];


the binresult will be equal to "00000100";


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nils pipenbrinckCommented:


btw.. it's easy.. take a look at the &, >> operators and the for loop.
char result[8+1];
unsigned char value;

result[8] = '\0'; // null terminated string

for (int i = 7; i >= 0 ; --i)
   result[i] = value & 0x01 ? '1' : '0';
   value >>= 1;

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string ToBinary(long value)
    string result = "";
    if (value == 0) result = "0";
    while (value > 0)
        result = string((value%2 == 1)?"1":"0") + result;
        value >>= 1;
    return result;
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