printf("You input values %d and %d\n", x, y);

If the value of x is 5 and y is 10, this printf statement will output:

You input values 5 and 10

• "You input values %d and %d\n" is the format string
• %d is a format specification
• The two format specifications %d are replaced in left to right order by the remaining values in the argument list: x and y
• The value to replace a %d conversion specification should be an integer.

Other conversion specifications:

Conversion spec	Expected value type
%d	int
%f	float or double
%c	char
%s	char array