Welcome to the second day of our C voyage. Today, Sharls and Teddy are going to explore further; how to program in C.

Revision of what we know so far

Sharls made her first C program yesterday. She did this by first typing out a program in Text Edit. The program was typed in as plain text (CMD + Shift + T).

/* hello.c */
#include <stdio.h>

int main(void)
{
	printf("Hello, World!\n");
	
	return 0;
}

Sharls then saved the file with a .c extension. She then compiled it using the command cc hello.c -o program. Sharls then went on to execute the program with the command ./program.

Revision Questions

What is the basic structure of a C program?

What does the command #include <stdio.h> do?

What is the command issued to the terminal to compile a program?

Explain the function header int main(void)?

What does return 0; mean?

Spot the error in the code:

#include <stdio.h>

int main(void)
{
	printf("Hello, World!\n")
	
	return 0
}