diff --git a/C_C++/числа.c b/C_C++/числа.c
new file mode 100644
index 0000000..32f9c2a
--- /dev/null
+++ b/C_C++/числа.c
@@ -0,0 +1,89 @@
+// @BAKE gcc $@ -o $*.out -std=c2x $(pkg-config --cflags --libs readline)
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <readline/readline.h>
+
+#define N_NUMBERS 101
+
+#define ON_TEEN "на" "дцать"
+
+char * numbers[N_NUMBERS] = {
+    [0] = "ноль",
+    [1] = "один",
+    [2] = "два",
+    [3] = "три",
+    [4] = "четырe",
+    [5] = "пять",
+    [6] = "шесть",
+    [7] = "семь",
+    [8] = "восемь",
+    [9] = "девять",
+
+    [11] = "один"   ON_TEEN,
+    [12] = "две"    ON_TEEN,
+    [13] = "три"    ON_TEEN,
+    [14] = "четыр"  ON_TEEN,
+    [15] = "пят"    ON_TEEN,
+    [16] = "шест"   ON_TEEN,
+    [17] = "сем"    ON_TEEN,
+    [18] = "восем"  ON_TEEN,
+    [19] = "девят"  ON_TEEN,
+
+    [10] = "двадцать",
+    [20] = "двадцать",
+    [30] = "тридцать",
+    [40] = "сорок",
+    [50] = "пятьдецят",
+    [60] = "шестьдесят",
+    [70] = "cемьдесят",
+    [80] = "восемьдесят",
+    [90] = "девяносто",
+
+    [100] = "сто",
+};
+
+void init(void) {
+    for (int i = 21; i < 100; i++) {
+        if (i % 10 == 0) { continue; }
+        asprintf(numbers+i, "%s %s", numbers[(i/10)*10], numbers[i % 10]);
+    }
+}
+
+signed main(void) {
+    init();
+
+  #if 0
+    for (int i = 0; i < N_NUMBERS; i++) {
+        puts(numbers[i]);
+    }
+    return 0;
+  #endif
+
+    srand((long)&main);
+    char * input;
+    int a, b, c;
+
+    while (true) {
+        a = rand() % N_NUMBERS;
+        b = rand() % N_NUMBERS;
+        c = a + b;
+        c = (c > 100 ? c - 100 : c);
+
+        printf("%s + %s?\n", numbers[a], numbers[b]);
+
+      input:
+        input = readline("|отвечать> ");
+        if (input == NULL) { break; }
+
+        if (strcmp(input, numbers[c])) {
+            puts("Нет!");
+            printf("%d + %d = %d\n", a, b, c);
+            puts(numbers[c]);
+            goto input;
+        }
+
+        puts("Да!");
+    }
+}