C++ question

[Reddoug]

Hello

I am trying to figure out why I am getting errors when trying to run Hello World C++ program. I have tried to find a solution but I am not able to.

1 #include <iostream>
2
3 int main(int argc, char *argv [])
4 {
5 std::cout << "Hello World!" << std::endl;
6
7 return 0;
8 }

Error

./helloworld.cpp: line 3: syntax error near unexpected token `('
./helloworld.cpp: line 3: `int main(int argc, char *argv [])'


I used gcc helloworld.cpp -o helloworldcpp to compile in Ubuntu. Don't see why it works in Code Blocks in Windows but not Ubuntu.
I used ./helloworld.cpp to try and run it. Permissions were changed to 755

I also tried to create with C and I get the same error when trying to run it.

1 #include <stdio.h>
2 int main(int argc, char *argv[])
3 {
4 printf("Hello World!\n");
5 return 0;
6 }

./helloworld.c: line 2: syntax error near unexpected token `('
./helloworld.c: line 2: `int main(int argc, char *argv[])'


Stumped
Doug

[steeldriver]

... because you are trying to run the source code in a shell - you need to compile it first, then run the resulting binary executable



g++ -o helloworld helloworld.cpp

./helloworld

[Reddoug]

Thank you for your reply

I ran g++ -o helloworld helloworld.cpp and received same error when I tried ./helloworld.cpp. I tried ./helloworld and it ran properly.
I always thought I needed the .cpp extension.

Thank you for your help.
Doug

[steeldriver]

EDIT: nevermind - I reread your post and it seems like you've got it now