Finding no. of digits in a Number

math/finding_number_of_Digits_in_a_Number.cpp

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+/**
+ * @author amino19
+ * @file
+ *
+ * \brief Finding number of Digits in a Number
+ * \details Basically, its a very basic math of
+ *  finding number of digits in a number (input),
+ *  For more details, refer Algorithms-Explanation
+ */
+
+
+/* Log based C++ program to count number of
+*  digits in a number/integer */
+
+#include <cassert>
+#include <iostream>
+
+int main() 
+{
+    long long n;
+    int count = 0;
+    std::cout << "Enter an integer: ";
+    std::cin >> n;
+
+    /* iterate until n becomes 0
+    *  remove last digit from n in each iteration
+    *  increase count by 1 in each iteration */
+   
+    while (n != 0) 
+    {
+        n /= 10;      // n = n/10
+        ++count;
+    }
+
+    std::cout << "Number of digits: " << count;
+}