Added solution to Problem 34 Factorial

Author: guranshdeol

C++/34_Factorial.cpp

@@ -0,0 +1,19 @@
+//Given a number N. Print the factorial of number N.
+
+#include <iostream>                    //iostream is a header file which contains basic input/output functions.
+#include <iomanip>                     //iomanip is a header file which contains functions for input/output manipulations.
+#include <cmath>                       //cmath is a header file which contains mathematical functions.
+int main() {
+    int t;                              //Declaring variable t as integer.
+    cin >> t;                           //Taking input of t.
+    while(t--) {                        //Looping t times.
+        int n;                          //Declaring variable n as integer.
+        cin >> n;                       //Taking input of n.
+        long long int fact = 1;         //Declaring variable fact as long long int and initializing it with 1.
+        for(int i = 2; i <= n; i++)     //Looping from 2 to n.
+            fact *= i;                  //Multiplying fact with i.
+        cout << fact << endl;           //Printing fact.
+    }
+    return 0;                           //Return 0 to indicate that the program ended successfully.
+    //End of program
+}