What will be the data type returned for the following C function? #include <stdio.h> int func() { return (double)(char)5.0; }

The data type returned by the function will be int.

Here's the step by step explanation:

1. The function is declared with int as the return type. This means that, regardless of the operations inside the function, it should return an integer.

2. Inside the function, there is a return statement with a complex expression. Let's break it down:

   • 5.0 is a double.
   • (char)5.0 casts the double to a char. In C, a char is actually a very small integer, so this will truncate the double 5.0 to the integer 5.
   • (double)(char)5.0 casts the char back to a double. However, since the char was 5 (an integer), the resulting double is also 5.0.

3. Despite the final result of the expression being a double, the function will still return an int because of its declaration. This means that the double 5.0 will be truncated again to the integer 5 before being returned.

So, the function returns an int.