Predict the output of the following C program with a printf inside printf.
Output :
198741
Explanation :
1. Firstly, the innermost
printf is executed which results in printing 1987
2. This
printf returns total number of digits in 1987 i.e 4. printf() returns number of characters successfully printed on screen. The whole statement reduces to :
3. The second
printf then prints 4 and returns the total number of digits in 4 i.e 1 (4 is single digit number ).
4. Finally, the whole statement simply reduces to :
5. It simply prints 1 and output will be :
Output:
198741
So, when multiple
printf's appear inside another
printf, the inner
printf prints its output and returns length of the string printed on the screen to the outer
printf.
