[combox27]

hello well i just started c I'm learning it. my question is why is Dev c++ telling me the project is not compiled ? i saved it and i compiled it every time i i try to run the program it tells me the project in not compiled

i'm using Dev c++ 4.9.9.2

trying to do the basic hello world in c

here is the code i wrote in dev c++

 
main()
{
	  printf("helloworld\n");
	   getchar();
}

i mad a project and then i the source file ? i seve the source file as hello world.c
and the project as hello

what am i doing wrong

it say's i have 2 errors in the compile log

[Linker error] undefined reference to `__cpu_features_init'
ld returned 1 exit status
C:\Dev-Cpp\Makefile.win [Build Error] ["hello] Error 1

why am i using the getchar();

well i just following the tutorial

it dosnt work ether way with or with out getchar();

i'm not sure witch one is the one to look at ?

this is from the compiler ?

[Linker error] undefined reference to `__cpu_features_init'
ld returned 1 exit status
C:\Dev-Cpp\Makefile.win [Build Error] ["hello] Error 1


this is from compiler log

Compiler: Default compiler
Building Makefile: "C:\Dev-Cpp\Makefile.win"
Executing make...
make.exe -f "C:\Dev-Cpp\Makefile.win" all
gcc.exe -c "hell world.c" -o "hell world.o" -I"C:/Dev-Cpp/include"

gcc.exe "hell world.o" -o "hello .exe" -L"C:/Dev-Cpp/lib"

/mingw/lib/crt2.o(.text+0x37):crt1.c: undefined reference to `__cpu_features_init'
collect2: ld returned 1 exit status

make.exe: *** ["hello] Error 1

Execution terminated

This post has been edited by combox27: 01 February 2009 - 11:11 AM

[Martyr2]

Well first of all when a compiler reports errors in the code, it doesn't compile. The error prevents it from compiling. So it would be helpful if you show us the error messages you are getting.

And also keep in mind that if a program does compile it doesn't mean that it is going to be correct. It just means you don't have any "compile time" errors. You can still have "run time" errors when you run it.

[OrganizedChaos]

1. C is not the same as C++
2. You have no #include<iostream> statement at the top of your code
3. Why are you using getchar()?

Posting the error messages always helps, too.

[combox27]

[Linker error] undefined reference to `__cpu_features_init'
ld returned 1 exit status
C:\Dev-Cpp\Makefile.win [Build Error] ["hello] Error 1

why am i using the getchar();

well i just following the tutorial

it dosnt work ether way with or with out getchar();

i'm not sure witch one is the one to look at ?

this is from the compiler ?

[Linker error] undefined reference to `__cpu_features_init'
ld returned 1 exit status
C:\Dev-Cpp\Makefile.win [Build Error] ["hello] Error 1


this is from compiler log

Compiler: Default compiler
Building Makefile: "C:\Dev-Cpp\Makefile.win"
Executing make...
make.exe -f "C:\Dev-Cpp\Makefile.win" all
gcc.exe -c "hell world.c" -o "hell world.o" -I"C:/Dev-Cpp/include"

gcc.exe "hell world.o" -o "hello .exe" -L"C:/Dev-Cpp/lib"

/mingw/lib/crt2.o(.text+0x37):crt1.c: undefined reference to `__cpu_features_init'
collect2: ld returned 1 exit status

make.exe: *** ["hello] Error 1

Execution terminated

[claudio]

Hello and good afternoon.

So if you're getting that error, you probably have more than one MinGW & Msys instance installed?

After Googling for a while I found out best choice is to re-install Dev C++ in preference in a new directory.

Hope what I'm saying is right.

Also, for start, you need an header there. For that you should probably use:

#include <iostream.h>  


int main()
{
//Desired operations
}

[FrozenSnake]

// C++ Code
#include <iostream>

int main()
{
	printf("helloworld\n");
	getchar();
}

// C code
#include <stdio.h>

int main()
{
	printf("helloworld\n");
	getchar();
}

You need to use the headerfiles that contains the functions you want to use, the compiler does not know what printf() or getchar() is without the headerfile

C++
iostream is the headerfile to use with C++

C
stdio.h is the headerfile to use with C

Some tutorials show code as

int main()
{
	printf("helloworld\n");
}

but later on or before tells the reader that he are suppose to use one or more headers. In this case iostream for C++ and stdio.h for C

This post has been edited by FrozenSnake: 01 February 2009 - 12:04 PM

[mono15591]

Quote

why am i using the getchar();

you using that so your program doesn't close as soon as you start it
getchar();basically just waits for user input and then when you hit enter the program will end

right?

[FrozenSnake]

mono15591, on 1 Feb, 2009 - 11:03 AM, said:

you using that so your program doesn't close as soon as you start it
getchar();basically just waits for user input and then when you hit enter the program will end

right?

Correct, cin.get() doesn't work in C =)
well It maybe works if you tinker a bit with some headers but it wouldn't be ANSI/ISO and if you doesn't stick to well known standards people cant help

This post has been edited by FrozenSnake: 01 February 2009 - 12:19 PM

[combox27]

claudio, on 1 Feb, 2009 - 10:41 AM, said:

Hello and good afternoon.

So if you're getting that error, you probably have more than one MinGW & Msys instance installed?

After Googling for a while I found out best choice is to re-install Dev C++ in preference in a new directory.

Hope what I'm saying is right.

Also, for start, you need an header there. For that you should probably use:

#include <iostream.h>  


int main()
{
//Desired operations
}

im deleting all the compiler and restart my pc

[combox27]

combox27, on 1 Feb, 2009 - 12:19 PM, said:

claudio, on 1 Feb, 2009 - 10:41 AM, said:

Hello and good afternoon.

So if you're getting that error, you probably have more than one MinGW & Msys instance installed?

After Googling for a while I found out best choice is to re-install Dev C++ in preference in a new directory.

Hope what I'm saying is right.

Also, for start, you need an header there. For that you should probably use:

#include <iostream.h>  


int main()
{
//Desired operations
}

im deleting all the compiler and restart my pc

i think i should use a different compiler i'm learning c what is a good c compiler

[FrozenSnake]

GCC is a good one.
A good IDE is Dev-Cpp. I think Dev-Cpp uses GCC.

And C do not have iostream use stdio.h
read this

[combox27]

FrozenSnake, on 1 Feb, 2009 - 03:43 PM, said:

GCC is a good one.
A good IDE is Dev-Cpp. I think Dev-Cpp uses GCC.

And C do not have iostream use stdio.h
read this

but i never put
#include <iostream>
in my code ?

and i didn't put int main () what is that for in the tutorial lol i haven't moved on because i have not found out my problem i did get codebreaker but i hing i'm getting the same thing as a problem omg

can i have a link to the gcc ? what you thing is a good c compiler

This post has been edited by combox27: 01 February 2009 - 05:07 PM

[Blade2021]

its very obvious that you are not taking time to read the replies to this post. I have over read them all and they explain answers to all your questions you have listed. I suggest you read over the replies that these users have taken their time to help you with.

[combox27]

check this forum this guy is having the same problem as me but the is so much mix talk i can find out if they fix the problem ?

http://forums.devshe...led-409726.html

[combox27]

Blade2021, on 1 Feb, 2009 - 04:12 PM, said:

its very obvious that you are not taking time to read the replies to this post. I have over read them all and they explain answers to all your questions you have listed. I suggest you read over the replies that these users have taken their time to help you with.

this is my 10th time reading over them and i still get the same warning witch is "project is not compiled "

my code that im working on now from my tutorial
is

#include <stdio.h>
int main()
{
/*my veriables box*/	  
  int age;
  int whatsyourage;
/* my veriables box end*/  
  
	printf("hello world\n");
	age = 20;
	printf("my age is %d\n",age);
	printf ("pleas enter your age:");
	scanf("%d",&whatsyourage);
	printf("the age you entered is %d\n",whatsyourage);
	
	fflush(stdin);
	getchar(); 
	return 0;

}

and the 2 errors are

[Linker error] undefined reference to `__cpu_features_init'
ld returned 1 exit status
C:\Dev-Cpp\Makefile.win [Build Error] [yohello.exe] Error 1