修改文件结构。

POP/05/Exercise03.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int main() {
+    int input = 0;
+    int digit = 0;
+    int digits[5] = {0};
+    scanf("%d", &input);
+    while (input != 0) {
+        digits[digit] = input % 10;
+        input /= 10;
+        digit++;
+    }
+    printf("This number has %d digit(s).\n", digit);
+    printf("To print every digit in a seperate line:\n");
+    for (int i = digit - 1; i >= 0; i--) {
+        printf("%d\n", digits[i]);
+    }
+    printf("To output it reversely: ");
+    for (int i = 0; i < digit; i++) {
+        printf("%d", digits[i]);
+    }
+    return 0;
+}