Question

I need to run this line from my c++ program:

java -jar test.jar text1 text2

the java app will give a float value and give it to the c++ program.

How can I do this? I never call a java stuff before from my ms visual studio C++ file.

Answer 1

When I run the java command directly on my command prompt, it works. but when I run the command from the c++ file, the error says “The system cannot execute the specified program” .

here’s my code, im using ms visual studio 2005 :

#include "stdafx.h"

#include <conio.h>


int _tmain(int argc, _TCHAR* argv[])
{

    float value;

    FILE  *child = _popen("java -jar c:\simmetrics_jar_v1_6_2_d07_02_07.jar text1 ssdyr445", "r");
    if (fscanf(child, "%f", &value) == 1)
         {
            fprintf(stdout,"Got Value from simmetrics: %f\n", value);
     }
    else
         {
            fprintf(stdout,"ERROR\n");
         }
    fclose(child);

    return 0;
}