The document presents basic examples of 'Hello World' programs in C programming language. It includes code snippets demonstrating the structure and syntax required to display the phrase 'hello world' in the console. Additional functions like 'memcpy()' are mentioned but not elaborated upon.

1. These slides demonstrate basic hello world program

2. #include <stdio.h>
 int main()
 {
 printf(“helloworldn”);
 }

3. #include <stdio.h>
#include <stdlib.h>
 Int main()
 {
 Printf(“hello worldn”);
 Memcpy();
 Return 0;
 }