Why does a C program start with #include <stdio.h>?

Hi Adithya,

Good question.
The line #include tells the compiler to include the Standard Input Output library before compiling your program.

This library contains functions like printf() and scanf(). So if you're using printf to display something on the screen, you need to include stdio.h. Without it, the compiler won’t recognize those functions.

It’s like bringing in the tools your program needs to do input and output.

If you have more questions, I am here to help.