C++ data type
32767 legal integer constant long int type.

Unsigned integer constants of 35u method.

1.25e3.43L is wrong in the exponent part, and only integers are allowed in the exponent part!

0.0086e-32 legal floating-point number double precision type.

87' is an illegal character constant. The error is 8, which is out of bounds. Octal numbers can only be 0 to 7!

"Computer system" is a legal string constant.

"A" is a legal string constant.

A' is a legal character constant.

"96\45" illegal character constant!

-0 +0 legal integer constant.

.5 legal floating-point number double-precision type.

-.567 legal floating-point number double precision type.