read from stdin in C code example

Example 1: what is stdin in c

//stdin accesses the keyboard, it's a file pointer

Example 2: read from stdin c

#include <stdio.h>
int main( ) {

   char str[100];
   int i;

   printf( "Enter a value :");
   scanf("%s %d", str, &i);

   printf( "\nYou entered: %s %d ", str, i);

   return 0;
}