i use the netbeans with MinGW and MYSY make /debugger but when i compile a basic cpp code in it and run it it produces two erorrs

this is the code runned and the output![alt text][1] box

#include <iostream>
void main()
{
  cout << "Hello World!" << endl;  
  cout << "Welcome to C++ Programming" << endl;
}

output is

/usr/bin/make -f nbproject/Makefile-Debug.mk SUBPROJECTS= .build-conf
make[1]: Entering directory `/d/Users/Home/Documents/NetBeansProjects/newApp'
/usr/bin/make  -f nbproject/Makefile-Debug.mk dist/Debug/MinGW-Windows/newapp.exe
make[2]: Entering directory `/d/Users/Home/Documents/NetBeansProjects/newApp'
mkdir -p dist/Debug/MinGW-Windows
g++.exe     -o dist/Debug/MinGW-Windows/newapp build/Debug/MinGW-Windows/newmain.o build/Debug/MinGW-Windows/newfile.o build/Debug/MinGW-Windows/main.o  
build/Debug/MinGW-Windows/newfile.o: In function `main':

D:/Users/Home/Documents/NetBeansProjects/newApp/newfile.cpp:5: multiple definition of `main'

build/Debug/MinGW-Windows/newmain.o:D:/Users/Home/Documents/NetBeansProjects/newApp/newmain.c:15: first defined here

build/Debug/MinGW-Windows/main.o: In function `main':

D:/Users/Home/Documents/NetBeansProjects/newApp/main.cpp:13: multiple definition of `main'

build/Debug/MinGW-Windows/newmain.o:D:/Users/Home/Documents/NetBeansProjects/newApp/newmain.c:15: first defined here

collect2: ld returned 1 exit status

make[2]: *** [dist/Debug/MinGW-Windows/newapp.exe] Error 1
make[2]: Leaving directory `/d/Users/Home/Documents/NetBeansProjects/newApp'
make[1]: *** [.build-conf] Error 2
make[1]: Leaving directory `/d/Users/Home/Documents/NetBeansProjects/newApp'
make: *** [.build-impl] Error 2
BUILD FAILED (exit value 2, total time: 1s)

how can i solve this ?