Corrected a misspelled a word and added the return (#30091)

The "printf()" was misspelled as "print()", so i corrected that and also added the part which describes what does printf() return,, and also added a sample code to clear the concept.

guide/english/c/hello-world/index.md

@@ -23,8 +23,8 @@ To write on console you can use the function `printf()` contained in the library
  
   ## Explanation 
  * The #include <stdio.h> is a preprocessor command. This command tells compiler to include the contents of stdio.h (standard input and        output) file in the program.
- * The stdio.h file contains functions such as scanf() and print() to take input and display output respectively.
- * If you use printf() function without writing #include <stdio.h>, the compiler will generate an error during compilation of the program.
+ * The stdio.h file contains functions such as scanf() and printf() to take input and display output respectively.
+ * If you use printf() function without writing #include <stdio.h>, the program will not be compiled.
  * The execution of a C program starts from the main() function.
  * The printf() is a library function to send formatted output to the screen. In this program, the printf() function displays "Hello, World!" text on the screen.
  * The return 0; statement is the "Exit status" of the program. In simple terms, program ends with this statement.
@@ -37,5 +37,4 @@ To write on console you can use the function `printf()` contained in the library
  #### More Information
  
  * Conventionally, the first ever program you write is the "hello world" program, be it in any language.
- * This is because Brian Kernighan was the  first  to write "hello, world" program for the documentation of the BCPL programming language developed by Martin Richards. 
-
+ * This is because Brian Kernighan was the  first  to write "hello, world" program for the documentation of the BCPL programming language developed by Martin Richards.