Related to string to binary conversion

[Akshaya Krishna]

I am doing project on Image steganography. First i read the string. Then, I convert it to binary using below code.
for(std::size_t i=0;i<str.size( );i++)
{
cout<<(bitset<8 >(str[i]));
}
the ouput is binary format. But i need to save the binary format of complete string(not each character) to access each bit of the string to hide it in image. HOw to concatenate the multiple bitsets. Please help me....

[weaknessforcats]

Use an array of usigned long.

You can use bitset::to_ulon g to convert the bitset to an unsigned long integer.

A bitset<8> will have a value 0-255 so the bits will be in the low end of the unsigned int.

You should be able to write a function with a unsigned long& as a argument, bitset<8>&, and an enum with a value of OFFSET0, OFFSET8, OFFSET16,etc..

The function stores the bitset into the unsigned int offset by the value of the enum. It will convert the bitset to an unsigned long using bitset::to_ulon g.

Since your unsigned int array is guaranteed to be contiguous in memory, your string can be converted into one contiguous array of bits.

BTW: Instead of using a bitset why bit use str[i] -49 to get the correct bits for the char?