Thread: collect2.exe: error: ld returned 1 exit status

Hi everyone. I have a problem about C programming. I am beginner so I will be very happy if you help me with simple and easy understandable methods.





C:\C alıştırma>gc *.o -lm
'gc' is not recognized as an internal or external command,
operable program or batch file.


C:\C alıştırma>gcc *.o -lm
c:/mingw/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/lib/libmingw32.a(main.
o): In function `main':
e:\p\giaw\src\pkg\mingwrt-4.0.3-1-mingw32-src\bld/../mingwrt-4.0.3-1-mingw32-src
/src/libcrt/crt/main.c:91: undefined reference to `WinMain@16'
collect2.exe: error: ld returned 1 exit status


C:\C alıştırma>

Thanks a lot for your answer. Can you help me about this problem? When I sent ''gcc -S cevre_hesapla.c'' command, I saw these errors. (at the bottom)

Code:

typedef long long __time64_t;
# 60 "c:\\mingw\\include\\sys\\types.h" 3
typedef __time64_t time_t;














typedef long _off_t;


typedef _off_t off_t;










typedef long long _off64_t;


typedef long long off64_t;










typedef unsigned int _dev_t;




typedef _dev_t dev_t;












typedef short _ino_t;




typedef _ino_t ino_t;












typedef int _pid_t;




typedef _pid_t pid_t;












typedef unsigned short _mode_t;




typedef _mode_t mode_t;












typedef int _sigset_t;




typedef _sigset_t sigset_t;










typedef int _ssize_t;




typedef _ssize_t ssize_t;










typedef long long fpos64_t;
# 151 "c:\\mingw\\include\\sys\\types.h" 3
typedef unsigned int useconds_t;
# 521 "c:\\mingw\\include\\stdio.h" 2 3
extern __inline__ FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__))
 fopen64 (const char*, const char*);
extern __inline__ FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__))
 fopen64 (const char* filename, const char* mode)
{
  return fopen (filename, mode);
}


int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fseeko64 (FILE*, of
f64_t, int);












extern __inline__ off64_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__
)) ftello64 (FILE *);
extern __inline__ off64_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__
)) ftello64 (FILE * stream)
{
  fpos_t pos;
  if (fgetpos(stream, &pos))
    return -1LL;
  else
   return ((off64_t) pos);
}
# 551 "c:\\mingw\\include\\stdio.h" 3
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fwprintf (FILE*, c
onst wchar_t*, ...);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) wprintf (const wch
ar_t*, ...);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _snwprintf (wchar_
t*, size_t, const wchar_t*, ...);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) vfwprintf (FILE*,
const wchar_t*, __gnuc_va_list);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) vwprintf (const wc
har_t*, __gnuc_va_list);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _vsnwprintf (wchar
_t*, size_t, const wchar_t*, __gnuc_va_list);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _vscwprintf (const
 wchar_t*, __gnuc_va_list);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fwscanf (FILE*, co
nst wchar_t*, ...);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) wscanf (const wcha
r_t*, ...);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) swscanf (const wch
ar_t*, const wchar_t*, ...);
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fgetwc (FILE*);


 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fputwc (wchar_t
, FILE*);
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) ungetwc (wchar_
t, FILE*);






 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) swprintf (wchar_t*
, const wchar_t*, ...);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) vswprintf (wchar_t
*, const wchar_t*, __gnuc_va_list);




 wchar_t* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fgetws (wchar
_t*, int, FILE*);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fputws (const wcha
r_t*, FILE*);
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) getwc (FILE*);
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) getwchar (void)
;
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) putwc (wint_t,
FILE*);
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) putwchar (wint_
t);


 void __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _lock_file(FILE*)
;
 void __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _unlock_file(FILE
*);
 wchar_t* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _getws (wchar
_t*);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _putws (const wcha
r_t*);
 FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wfdopen(int, co
nst wchar_t *);
 FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wfopen (const w
char_t*, const wchar_t*);
 FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wfreopen (const
 wchar_t*, const wchar_t*, FILE*);
 FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wfsopen (const
wchar_t*, const wchar_t*, int);
 wchar_t* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wtmpnam (wch
ar_t*);
 wchar_t* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wtempnam (co
nst wchar_t*, const wchar_t*);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wrename (const wc
har_t*, const wchar_t*);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wremove (const wc
har_t*);
 void __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wperror (const w
char_t*);
 FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _wpopen (const w
char_t*, const wchar_t*);






int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) snwprintf (wchar_t*
 s, size_t n, const wchar_t* format, ...);
int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) vsnwprintf (wchar_t
* s, size_t n, const wchar_t* format, __gnuc_va_list arg);










int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) vwscanf (const wcha
r_t * __restrict__, __gnuc_va_list);
int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) vfwscanf (FILE * __
restrict__,
         const wchar_t * __restrict__, __gnuc_va_list);
int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) vswscanf (const wch
ar_t * __restrict__,
         const wchar_t * __restrict__, __gnuc_va_list);














 FILE* __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) wpopen (const wc
har_t*, const wchar_t*);










 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _fgetwchar (voi
d);
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _fputwchar (win
t_t);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _getw (FILE*);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) _putw (int, FILE*)
;




 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fgetwchar (void
);
 wint_t __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) fputwchar (wint
_t);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) getw (FILE*);
 int __attribute__((__cdecl__)) __attribute__ ((__nothrow__)) putw (int, FILE*);


# 2 "cevre_hesapla.c" 2


int main(int argc, char *argv[])
{
int yaricap;
float cevre;




printf(''\nYaricapi giriniz:'');
scanf(''%d'', &yaricap);




cevre = 2 * 3.14 * yaricap;
printf(''Dairenin cevresi:%.2f\n'', cevre);


return 0;
}


C:\C alıştırma>gcc -S cevre_hesapla.c
cevre_hesapla.c: In function 'main':
cevre_hesapla.c:9:8: error: empty character constant
 printf(''\nYaricapi giriniz:'');
        ^
cevre_hesapla.c:9:1: error: stray '\' in program
 printf(''\nYaricapi giriniz:'');
 ^
cevre_hesapla.c:9:11: error: expected ')' before 'nYaricapi'
 printf(''\nYaricapi giriniz:'');
           ^
cevre_hesapla.c:9:29: error: empty character constant
 printf(''\nYaricapi giriniz:'');
                             ^
cevre_hesapla.c:10:7: error: empty character constant
 scanf(''%d'', &yaricap);
       ^
cevre_hesapla.c:10:11: error: empty character constant
 scanf(''%d'', &yaricap);
           ^
cevre_hesapla.c:10:10: error: 'd' undeclared (first use in this function)
 scanf(''%d'', &yaricap);
          ^
cevre_hesapla.c:10:10: note: each undeclared identifier is reported only once fo
r each function it appears in
cevre_hesapla.c:10:11: error: expected ')' before '\x0'
 scanf(''%d'', &yaricap);
           ^
cevre_hesapla.c:14:8: error: empty character constant
 printf(''Dairenin cevresi:%.2f\n'', cevre);
        ^
cevre_hesapla.c:14:10: error: expected ')' before 'Dairenin'
 printf(''Dairenin cevresi:%.2f\n'', cevre);
          ^
cevre_hesapla.c:14:10: error: stray '\' in program
cevre_hesapla.c:14:33: error: empty character constant
 printf(''Dairenin cevresi:%.2f\n'', cevre);
                                 ^


C:\C alıştırma>

Thank you a lot for your messages for help I solve problem and it was a really stupid mistake that I wrote double quotes with "shift+2" but I have to use the button which is near 1 I realized it Thank you again.