what represent this main () ?? and what is the purpose of # in program???
What is the purpose of int main ()?
hello @Anku47
main() function is the entry point of any C/C++ program. It is the point at which execution of program is started. When a C/C++ program is executed, the execution control goes directly to the main() function. Every C/C++ program have a main() function.
The preprocessors are the directives, which give instructions to the compiler to preprocess the information before actual compilation starts.
All preprocessor directives begin with #, and only white-space characters may appear before a preprocessor directive on a line. Preprocessor directives are not C++ statements, so they do not end in a semicolon (;).
You already have seen a #include directive in all the examples. This macro is used to include a header file into the source file.
There are number of preprocessor directives supported by C++ like #include, #define, #if, #else, #line, etc.
read about preprocessor for more details
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