Important functions for sample C program

1. printf()
-------------
This function is used to display the messages,variables etc on the output screen or console.
Syntax
-------
printf("messages in double quotes",var1,var2,var3,..............);

2. scanf()
------------
This function is used to read the variables explicitly at run time.
Syntax
-------
scanf("format specifiers",&var1,&var2,........);

3. clrscr()
------------
This function is used to clear the output screen.
Syntax
-------
clrscr();

4. getch()
------------
This function is used to read a single character. This is mainly used to display the output without termination.
Syntax
-------
getch();