Convert a string from Java to C++

c++, class, java, string

Solution

To append an `int` into string, you can use the `std::stringstream` :

#include <sstream>
#include <string>

std::stringstream oss;

oss << "text1 " << z << " text2" << j << " text3" << i;

std::string str = oss.str();

The method `str()` returns a `string` with a copy of the content of the stream.

EDIT :

If you have a `std::vector`, you can do :

#include <vector>

std::vector<int> arr(3);
unsigned int size = arr.size();
for ( unsigned int i = 0; i < size; i++ )
    oss << arr[i];

Or there is a C++11 way to do all the thing :

#include <string>
#include <vector>

std::vector<int> arr(3);

std::string result = "text1 " + std::to_string(z);
result += " text2" + std::to_string(j);
result += " text3" + std::to_string(i) + " ";

for ( auto& el : arr )
    result += std::to_string(el);

You can take a look at `std::to_string`.

Here is a live example of this code.

Remember that not all the compilers support C++11 as of right now.

Problem

I have this string in Java: ``` String op="text1 "+z+" text2"+j+" text3"+i+" "+Arrays.toString(vol); ``` where "z", "j" and "i" are int variables; "toString()" is a function belongs to a class. ``` class Nod { private: char *op; public: char Nod::toString() { return *op; } } ``` and "vol" is a vector of int variables. and I want to convert it into C++. Can you help me please? EDIT: Sorry because I confuse you, but "toString()" is not a function belongs to a class. "Arrays.toString()" - is a class from Java.

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