1. Computer Programming 0455-3391-01

2. A simple example /* HelloWorld: A simple C program */ #include int main (void) { printf (“Hello world!\n”); return 0; }

3. A simple example /* HelloWorld: A simple C program */ #include int main (void) { printf (“Hello world!\n”); return 0; } This is a comment comments help explain the program to someone they are ignored by the computer

4. A simple example /* HelloWorld: A simple C program */ #include int main (void) { printf (“Hello world!\n”); return 0; } This is an instruction to the compiler to insert the contents of a file named “stdio.h” into the program supplies useful information for the compiler

5. A simple example /* HelloWorld: A simple C program */ #include int main (void) { printf (“Hello world!\n”); return 0; } This tells the compiler we’re about to define a function, named main main is a special function; it is where your program starts running

6. A simple example /* HelloWorld: A simple C program */ #include int main (void) { printf (“Hello world!\n” ); return 0; } This is a C statement This statement calls a function named printf It causes the text to be printed on the screen