Check whether computer is Little Endian / Big Endian ?

Current post is on how to check whether computer is Big Endian or Little Endian.

It is a common technical interview question to test your knowledge on computer architecture.

Endianness refers - the order in which computer stores the bytes.

Little Endian - Stores LSB (Least Significant Byte) in lowest address.

Big Endian - Stores MSB (Most Significant Byte) in highest address.

Answer:

/* Function returns whether the computer system is Little or Big Endian*/

bool IsLittleEndian()
{
       int TestNumber = 1;
       char * ptr;

       ptr = (char *) &TestNumber;

       return (*ptr);    //True if little Endian.
}

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