Convert String To Integer

Author: akashmodak97

Hacker Blocks/Convert String To Integer.cpp

@@ -0,0 +1,39 @@
+/* Hacker Blocks */
+/* Title - Convert String to Integer */
+/* Created By - Akash Modak */
+/* Date - 14/07/2020 */
+
+// Take as input str, a number in form of a string. Write a recursive function to convert the number in string form to number in integer form. E.g. for “1234” return 1234. Print the value returned.
+
+// Input Format
+// Enter a number in form of a String
+
+// Constraints
+// 1 <= Length of String <= 10
+
+// Output Format
+// Print the number after converting it into integer
+
+// Sample Input
+// 1234
+// Sample Output
+// 1234
+// Explanation
+// Convert the string to int. Do not use any inbuilt functions.
+
+#include<iostream>
+#include<cstring>
+using namespace std;
+int convert(char *a,int n){
+	if(n==0)
+	return 0;
+	int digit = a[n-1]-'0';
+	int ans = convert(a,n-1);
+	return ans*10+digit;
+}
+int main() {
+	char temp[1000];
+	cin>>temp;
+	cout<<convert(temp,strlen(temp));
+	return 0;
+}