Formatted the code

Author: soulmachine

C++/chapImplement.tex

@@ -38,21 +38,21 @@ \subsubsection{代码}
 public:
     int reverse (int x) {
         long long r = 0;
-	long long t = x;
-	t = t > 0 ? t : -t;
+        long long t = x;
+        t = t > 0 ? t : -t;
         for (; t; t /= 10)
             r = r * 10 + t % 10;
 
-	bool sign = x > 0 ? false: true;
-	if (r > 2147483647 || (sign && r > 2147483648)) {
-	    return 0;
-	} else {
-	    if (sign) {
-	        return -r;
-	    } else {
-	        return r;
-	    }
-	}
+        bool sign = x > 0 ? false: true;
+        if (r > 2147483647 || (sign && r > 2147483648)) {
+            return 0;
+        } else {
+            if (sign) {
+                return -r;
+            } else {
+                return r;
+            }
+        }
     }
 };
 \end{Code}