02-Minimalist C Language Program

Learning Focus:

• Specific analysis
• Detailed explanation

Learning content:

1. #include <stdio.h>//file preprocessing, including standard input/output library

int main ()//C language Program main function, start entry

{

printf ("Hello world\n"); /*c the content of the language, print output on the screen */

return 0;

}

#include <> loads the code in the Stdio.h header file containing the standard input and output library functions into the program before the program executes, enabling the compiler to find the required function.

int main () tells the compiler that this is a main function that returns the type int.

{} represents the beginning and end of a program code block.

printf () is the C standard output function, "" double quotes tell the compiler what to output, ' \ n ' is a newline character, the cursor moves to the next line of the screen, '; ' semicolons indicate the end of our command or the end of this paragraph.

Finally, at the end of the program, the main function returns a value to the operating system, telling the operating system that the program is successful, and generally returning 0 to indicate that the program is running successfully.

02-Minimalist C Language Program