Structure of the C-program 2/2
Let's continue with our first program:
printf() is a function that prints something to the screen, in our case, the text
"Hello, c<>definity!". The text must be enclosed in double quotes, for example:
The C language treats
\nas one character, not two (
\n character means the end of the line. That is, everything after this character in the text field will be transferred to the next line:
In our course, we will sometimes use the
\t (tabulation) character, which means a tab - 4 spaces.
; - the character of the end of the expression. Every expression in C must end with a
;. It can be compared to a dot at the end of a sentence.
return - is a return statement. The C standard requires the main function to behave this way (
return 0). This has a practical use on UNIX systems, but in this case, it is a statement of the "Exit status". In simple terms, the program ends with this statement.
The return statement will be covered in more detail later in this course.
Everything was clear?