C Language doesn't have a boolean data type. Why..?

Answer 1

In c like in assembly at first the data type indicate the size of the variable not the usage of the variable. Boolean was introduced next in a separate library.
That's why.

Answer 2

This problem was identified and added to c++ later.

Answer 3

That is C XD. Don't forget that you can use integers 0 and 1 instead that.

1 - true
0 - false

Answer 4

Because integers can be used.

Answer 5

It has. Just try to give the question that has 2 possible answers. Use bool