When numerical data is to be transferred to disk from RAM, the data occupies more memory space
on disk. For example, a number 234567 needs 3 bytes memory space in RAM and when transferred to
disk requires 6 bytes memory space. For each numerical digit one byte space is needed. Hence, total
requirement for the number 234567 would be 6 bytes. Thus, text mode is inefficient for storing large
amount of numerical data because space occupation by it is large. Only solution to this inefficient
memory use is to open a file in binary mode, which takes lesser space than text mode. Few binary
modes are described belo ...
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