itoa function problem

Question

hello, i'm working on eclipse inside ubuntu envaironment on my c++ project.

i use itoa function (that works perfectly on visual studio) and the compiler shouts that itoa is undeclared.

in included <stdio.h>, <stdlib.h>, <iostream> and nothing help.

can someone please help me with this problem

thanks allot.

Answer 1

Did you include stdlib.h? (Or rather, since you're using C++, cstdlib)

Answer 2

itoa() is not part of any standard so you shouldn't use it. There's better ways, i.e...

C:

int main() {
    char n_str[10];
    int n = 25;

    sprintf(n_str, "%d", n);

    return 0;
}

C++:

using namespace std;
int main() {
    ostringstream n_str;
    int n = 25;

    n_str << n;

    return 0;
}

Answer 3

www.cplusplus.com says:

This function is not defined in ANSI-C and is not part of C++, but is supported by some compilers.

Therefore, I'd strongly suggest that you don't use it. However, you can achieve this quite straightforwardly using stringstream as follows:

stringstream ss;
ss << myInt;
string myString = ss.str();

Answer 4

Boost way:

string str = boost::lexical_cast<string>(n);