printf function is used to print information on screen. Note that c programming is a case sensitive. so you can not write "Printf".It is included in "stdio.h" Header file.
some examples if printf function:
printf(“This is printf function”);
printf(“\nI am a c programmer”);
Example program for printf:
#include<stdio.h>
#include<conio.h>
main()
{
clrscr();
printf("This is because of printf function");
getch();
}