C Quiz #03: First Program - Hello C

Please go through C Programming #03: First Program - Hello C before taking this quiz.

Question 1: How do you compile C file sample.c ?
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It depends on which compiler we use. If we use gcc in Linux.
gcc sample.c -o sample.out
This will create a out put binary file sample.out. Which can be run as follows
./sample.out

 Question 2: What does the C statement #include <stdio.h> do ?
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It is directive to compiler to include stdio.h header file.

Question 3: How many main() function C Program can have ?
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C can have at max only 1 main function. Since it is the first function that will be called when the program is executed. It should be only 1, so that there is no confusion.

Question 4: What does '\n' does in printf("Hello C\n"); ?
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\n is one of the escape sequence in C. n stands for new line. It inserts newline in output.

Question 5: What does 0 symbolize in return 0 in main function?
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SUCCESS or no errors.