The conversation between human and AI assistant.
What is #include<stdio.h>?
Can you give me an example of how to use printf and scanf functions?
Sure. Here's an example of how to use the printf function:

#include <stdio.h>

int main()
{
   printf("Hello, world!");
   return 0;
}

And here's an example of how to use the scanf function:

#include <stdio.h>

int main()
{
   int age;
   printf("Enter your age: ");
   scanf("%d", &age);
   printf("Your age is: %d", age);
   return 0;
}