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# Converting decimal to binary

In the following example, we give a list of decimal numbers as input to the AWK program, which returns the binary equivalent output on screen. This program reads the decimal number then finds the remainder of that number on division by 2, using the modulus operator. The remainder is stored in a string until the division of the number by 2, returns the 0 as follows:

`\$ vi list.txt10201540`
`\$ vi dec2bin.awkBEGIN    {    Print "\tDisplay Binary equivalent of Decimal number "    }func getnumber(decimal,temp, binary){    binary = "";    temp=decimal;    while( temp )        {        if ( temp%2==0 )        {            binary = "0" binary;                }        else        {            binary = "1" binary;                }        temp = int(temp/2);     }        return binary;}{    binval=getnumber( \$1 );    print \$1, " --> ", binval}\$ awk -f ...`

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