Add multilingual language and systems learning tracks

ceb/c-practice-20261101/lesson-1/main.c

@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <assert.h>
+
+int main(void) {
+    int minutes[] = {1, 2, 3};
+    int total = 0;
+    for (size_t i = 0; i < sizeof minutes / sizeof minutes[0]; ++i) total += minutes[i];
+    printf("%d\n", total);
+    return 0;
+}