What is the result of the expression abs(-7.5) in C?

In C, the function abs() is defined in stdlib.h and is used to compute the absolute value of an integer.

Passing a floating-point number like -7.5 to abs() is incorrect because abs() expects an int argument.

To handle floating-point numbers, C provides a different function called fabs(), which is defined in math.h.

Therefore, using abs(-7.5) results in a compile-time error or unexpected behavior because the argument type does not match the function's expected parameter.

Option A and B are incorrect because abs() cannot legally process a float.

Option C is incorrect because while 7 is the integer part, the input is still a float and would not be accepted by abs().

Hence, the correct answer is Option D: Error.