Cuneiform system of writing
Answer:
B) The Case Study
Explanation:
The case study is a research method that generally uses qualitative data, collected from real events, to explain, explore or describe current phenomena inserted in their context. It is usually a way of deepening an individual unit. It serves to answer questions that the researcher does not have much control over the phenomenon studied. That's why it so risks because the researcher doesn't have control over the studied object.
Answer:
#ifndef
Explanation:
#ifndef checks whether the given token has been #defined earlier in the file or in an included file.
It should be understood that #ifndef preprocessor commands are used to test if a preprocessor variable has been "defined".
And it should be noted that #ifndef is known as header guards. And its primary purpose in C++ is to prevent C++ header files from being included multiple times.
In conclusion , it should be noted that #ifndef is one of the conditional processing blocks, andit is known as header guards because it used in creation of "include guard".
