C Programming with NetBeans on Mac OSX - c

Question

I am pretty new to programming and I am trying to learn C. I installed net beans 8.0.2 on a mac with OS 10.10.3. And I tried to run my first code:
/* HelloWorld.c */
#include <stdio.h>
#include <stdlib.h>
int main(void) {
puts("Hello PROGC"); /* prints > Hello PROGC */
return EXIT_SUCCESS;
}
Now I am getting this Error Message:
"/Library/Developer/CommandLineTools/usr/bin/make" -f nbproject/Makefile-Debug.mk QMAKE= SUBPROJECTS= .build-conf
"/Library/Developer/CommandLineTools/usr/bin/make" -f nbproject/Makefile-Debug.mk dist/Debug/GNU-MacOSX/cppapplication_1
mkdir -p build/Debug/GNU-MacOSX
rm -f "build/Debug/GNU-MacOSX/Hello World.o.d"
gcc -c -g -MMD -MP -MF "build/Debug/GNU-MacOSX/Hello World.o.d" -o build/Debug/GNU-MacOSX/Hello\ World.o Hello\ World.c
mkdir -p dist/Debug/GNU-MacOSX
gcc -o dist/Debug/GNU-MacOSX/cppapplication_1 build/Debug/GNU-MacOSX/Hello\ World.o build/Debug/GNU-MacOSX/main.o
duplicate symbol _main in:
build/Debug/GNU-MacOSX/Hello World.o
build/Debug/GNU-MacOSX/main.o
ld: 1 duplicate symbol for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [dist/Debug/GNU-MacOSX/cppapplication_1] Error 1
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2
BUILD FAILED (exit value 2, total time: 687ms)
Could you please let me know what I have to change? Many thanks in advance!