Using atoi() function : char array string « String « C++

Using atoi() function

  
#include <stdlib.h>
#include <iostream>
using namespace std;
int main()
{
   char buffer[80];
   cout << "Enter a number: ";
   cin >> buffer;

   int number;
   number = atoi(buffer);
   cout << "Here's the number: " << number << endl;

   int sum = atoi(buffer) + 5;
   cout << "Here's sum: " << sum << endl;
   return 0;
}

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