numtostring.cpp

C++&datastructure书籍源码,以前外教提供现在与大家共享

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

#include "strutils.h"   // for tostring, atoi

// illustrate string to int/double conversion and vice versa

int main()
{
    int    ival;
    double dval;
    string s;
    
    cout << "enter an int ";
    cin >> ival;
    
    s = tostring(ival);
    cout << ival << " as a string is " << s << endl;
    
    cout << "enter a double ";
    cin >> dval;
    cout << dval << " as a string is " << tostring(dval) << endl;
    
    cout << "enter an int (to store in a string) ";
    cin >> s;
    ival = atoi(s);
    cout << s << " as an int is " << ival << endl;
    
    cout << "enter a double (to store in a string) ";
    cin >> s;
    cout << s << " as a double is " << atof(s) << endl;
    
    return 0;
}