solution of square number

Author: Nazmul-Hassan-10

square_number/en.md

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+# Dimik - Square Number
+
+You have to write a program to find out whether a number is a perfect square or not.
+
+### Solution
+* Store the square root of the number in a variable
+* check if the multiplication of that variable is equal to input the number
+
+# C++
+```cpp
+#include <iostream>
+#include <math.h>
+using namespace std;
+
+int main()
+{
+    int test_case;
+    cin >> test_case;
+
+    for (int i = 1; i <= test_case; i++)
+    {
+        int num;
+        cin >> num;
+        int a = sqrt(num);
+        if (a * a == num)
+        {
+            cout << "YES" << endl;
+        }
+        else
+        {
+            cout << "NO" << endl;
+        }
+    }
+
+    return 0;
+}
+```