having problem in the code

[Sabbir Alam]

#include<stdio.h>

void back_print(void)
{
char ch;
if((ch = getchar())!='\n')
back_print();
putchar(ch);
}
int main()
{
printf("Type a line: ");
back_print();
return 0;
}

can anyone tell me what is happening in the code and how..?

 

[rgd1101]

it put text on the screen and you key something in.
Run it and you can see what it is doing.