Compiling cpp code in netbeans produce errors, how to solve it?

Question

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 ?

Did you at least try using std::cout; using std::endl; ?

Xavier Ho
– Xavier Ho

2010-05-26 03:45:45 +00:00
Commented May 26, 2010 at 3:45 — Xavier Ho
– Xavier Ho, Commented May 26, 2010 at 3:45

johnsyweb · Accepted Answer · 2010-05-26 05:05:18Z

5

I can see three things here, the first two have been pointed out by Xavier and jwismar, but to consolidate:

Both D:/Users/Home/Documents/NetBeansProjects/newApp/newfile.cpp and D:/Users/Home/Documents/NetBeansProjects/newApp/main.cpp define a main(). You'll need to remove one of these from your project.
You'll need to be using std::cout and using std::endl.
main() should always return an int.

edited May 26, 2010 at 5:05

answered May 26, 2010 at 4:42

johnsyweb

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1 Comment

George Over a year ago

Two should be "using std::endl;" Otherwise, excellent answer.

jwismar · Accepted Answer · 2010-05-26 03:48:52Z

1

You have two different files in your project that define main(). One is called newfile.cpp, the other one is called newmain.c

And as the earlier comment notes, you will need to specify std::cout and std::endl

answered May 26, 2010 at 3:48

jwismar

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