How To Convert String To Exactly Same Integers In C or C++

Question

eg
string 32 -> Integer 32
string 7 -> Integer 7

Answer 1

Use stoi() function from <string> library.

Syntax:
stoi(str,idx,base);

Example (In you context):

#include <iostream>
#include <string>
using namespace std;

int main(){
string number;
cin>>number;
int toInt = stoi(number, nullptr , 10);
cout<<toInt;
return 0;
}

However, it does not work in sololearn's Code Playground, but I can affirm you that it will work anywhere else.

For better description:
http://www.cplusplus.com/reference/string/stoi/