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Root.cpp

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+#include<bits/stdc++.h> 
+#include<iostream>
+#include<conio.h>
+using namespace std; 
+
+// Function to find the nth root of a number
+void findNthRoot(double x, int n) 
+{ 
+
+// Initialize boundary values  
+double low, high; 
+if (x >= 0 and x <= 1) 
+{ 
+    low = x; 
+    high = 1; 
+} 
+else
+{ 
+    low = 1; 
+    high = x;  
+}  
+
+// Used for taking approximations of the answer  
+
+double epsilon = 0.00000001; 
+
+// Do binary search  
+double guess = (low + high) / 2; 
+while (abs((pow(guess, n)) - x) >= epsilon) 
+{ 
+    if (pow(guess, n) > x) 
+    { 
+        high = guess ; 
+    }  
+    else
+    { 
+        low = guess ; 
+    } 
+    guess = (low + high) / 2; 
+} 
+
+cout
+cout << fixed << setprecision(16)  
+     << guess; 
+}      
+
+// Main code  
+int main() 
+{ 
+    double x; 
+    int n;
+	cout << "Enter the number whose root has to be find: ";
+	cin>>x;
+	cout << "\n"; 
+	cout << "Enter which root has to be find: ";
+	cin >> n;
+    findNthRoot(x, n) ; 
+
+    getch();
+}