What's a difference between putchar() & getchar () ? And give me one example of this .

Answer 1

Getchar takes a character input while putchar print a character output
Here an example:

#include <stdio.h>
#include <ctype.h>

int main()
{
   char c;
   printf("Enter some character. Enter $ to exit...\n");

   while (c != '#x27;)
   {
      c = getchar();
      putchar(c);
      printf("\n");
   }
   return 0;
}

If you input: HELLO$
The output will be:
H
E
L
L
O

Answer 2

Ipang no thank you 😌
Anyway I just copied and pasted from the first Google result for "getchar putchar"
Here's the link, maybe can help https://fresh2refresh.com/c-programming/c-file-handling/putchar-getchar-function-c/

Answer 3

I understand. 🙏