How Can I Determine the Value of a Specific Bit in C/C Without Bit Shifting and Masking?

Determining the Value of a Specific Bit in C/C

The provided code snippet sets the variable temp to a value represented in binary as 0b1011110. The question posed is whether there exists a method to determine the value of the third bit (counting from the right) in temp without resorting to bit shifting and masking.

Built-in Functionality in C

In the C programming language, one can utilize a macro to conceal bit manipulation. The following macro can be defined:

#define CHECK_BIT(var,pos) ((var) &amp; (1<<(pos)))

This macro, CHECK_BIT, can be employed to check the n^th bit from the right end as follows:

CHECK_BIT(temp, n - 1)

where n represents the bit position of interest.

Solution in C

The C programming language provides the std::bitset class, which offers a convenient means of handling bitset operations. To determine the value of a specific bit using std::bitset, one can create a bitset object from the input value and then access the desired bit position. For example:

std::bitset<8> bits(temp);
if (bits.test(3)) {
  // Third bit (counting from the right) is set
}

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