getc() behaviour in C cli application enter

Question

this is my simple code:

   while (1)
       {
        /* code */
        putchar(getchar());
       }

I just want to get simple symbol echo in terminal and wait output like this: aabbnneett, but getchar accept input only after pressing "enter" key. Does it possible to getc accept symbols without enter, or may be i need to setup some PowerShell options?