printf ( ) → This function writes formatted data to screen. This function allows to supply the input in a fixed format and to obtain the output in the specified form. The printf () function interprets the contents of the format string.
Syntax:
Printf (“formatted string”, variables); if needed
Example 1.
Printf (“Average = % d percentage = % of’, avg. per);
Here the %d and %f are conversion characters.
They tell printf () to print the value of avg as an integer and per as afloat.
getchar ( ): Using this function any single ASCII character can be inputted in any char type of a variable. This function is available in stdio.h header file so it must be included in the program, in the beginning, using # include declarative.
For example,
#include<stdio.h>
#include<conio.h>
void main ()
{
char x;
x = getchar();
cout << “you entered” << x;
}
