So I have a vector of arrays of pointers to floats. I am trying to push back an array of null pointers of type float*. When I do, I get an error which I will post at the end. Here is teh code:
#include <iostream>
#include <math.h>
#include <vector>
#include <tr1/array>
using namespace std;
typedef vector< tr1::array<float* , 2> > polygon;
void triangle_solver(float*,float*,float*,float*,float*,float*);//Prototype function for solving triangles, 6 floats for 3 sides and 3 angles
void polygon_solver(polygon poly);
void displayPoly(polygon);
int main()
{
polygon test;
cout << test.size() << endl;
//polygon_solver(test);
return 0;
}
void displayPoly(polygon poly)
{
for (polygon::iterator it = poly.begin(); it != poly.end(); it++)
{
for (int c=0; c<2; c++)
{
if ((*it)[c]) cout << *(*it)[c] << endl;
else cout << '?' << endl;
}
}
}
void polygon_solver(polygon poly)
{
if (poly.size() > 3)
{
float *a1 = NULL;
float *a3 = NULL;
float *s2 = NULL;
polygon sub(poly.begin()+2, poly.end()-1);
float *A1 = NULL;
float *A3 = NULL;
float *S2 = NULL;
sub.push_back({A1, S2}); //ERROR HERE
float *aA3 = poly[2][1];
float *aA1 = poly[0][1];
cout << "Sub Polygon: " << endl;
displayPoly(sub); cout << endl;
for (int c=0; c<1; c++)
{
triangle_solver(a1, poly[1][1], a3, poly[1][0], s2, poly[0][1]);
polygon_solver(sub);
}
cout << "Polygon: " << endl;
displayPoly(poly); cout << endl;
}
}
I am using NULL to represent unknowns (is this standard?) Note that it compiles in code blocks but does not run, and also will not compile by running gcc at the command line. Here is the error:
main.cpp: In function ‘void polygon_solver(polygon)’:
main.cpp:45:23: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
sub.push_back({A1, S2});
^
main.cpp:45:31: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
sub.push_back({A1, S2});
^
/tmp/ccZsz9el.o: In function `main':
main.cpp:(.text+0x25): undefined reference to `std::cout'
main.cpp:(.text+0x2a): undefined reference to `std::ostream::operator<<(unsigned long)'
main.cpp:(.text+0x2f): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
main.cpp:(.text+0x37): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
/tmp/ccZsz9el.o: In function `displayPoly(std::vector<std::tr1::array<float*, 2ul>, std::allocator<std::tr1::array<float*, 2ul> > >)':
main.cpp:(.text+0xf4): undefined reference to `std::cout'
main.cpp:(.text+0xf9): undefined reference to `std::ostream::operator<<(float)'
main.cpp:(.text+0xfe): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
main.cpp:(.text+0x106): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
main.cpp:(.text+0x112): undefined reference to `std::cout'
main.cpp:(.text+0x117): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char)'
main.cpp:(.text+0x11c): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
main.cpp:(.text+0x124): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
/tmp/ccZsz9el.o: In function `polygon_solver(std::vector<std::tr1::array<float*, 2ul>, std::allocator<std::tr1::array<float*, 2ul> > >)':
main.cpp:(.text+0x2f5): undefined reference to `std::cout'
main.cpp:(.text+0x2fa): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
main.cpp:(.text+0x2ff): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
main.cpp:(.text+0x307): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
main.cpp:(.text+0x343): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
main.cpp:(.text+0x348): undefined reference to `std::cout'
main.cpp:(.text+0x34d): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
main.cpp:(.text+0x431): undefined reference to `std::cout'
main.cpp:(.text+0x436): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
main.cpp:(.text+0x43b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
main.cpp:(.text+0x443): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
main.cpp:(.text+0x476): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
main.cpp:(.text+0x47b): undefined reference to `std::cout'
main.cpp:(.text+0x480): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
/tmp/ccZsz9el.o: In function `__static_initialization_and_destruction_0(int, int)':
main.cpp:(.text+0x555): undefined reference to `std::ios_base::Init::Init()'
main.cpp:(.text+0x564): undefined reference to `std::ios_base::Init::~Init()'
/tmp/ccZsz9el.o: In function `std::vector<std::tr1::array<float*, 2ul>, std::allocator<std::tr1::array<float*, 2ul> > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::tr1::array<float*, 2ul>*, std::vector<std::tr1::array<float*, 2ul>, std::allocator<std::tr1::array<float*, 2ul> > > >, std::tr1::array<float*, 2ul> const&)':
main.cpp:(.text._ZNSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[_ZNSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_]+0x271): undefined reference to `__cxa_end_catch'
main.cpp:(.text._ZNSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[_ZNSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_]+0x284): undefined reference to `__cxa_begin_catch'
main.cpp:(.text._ZNSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[_ZNSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_]+0x2ec): undefined reference to `__cxa_rethrow'
/tmp/ccZsz9el.o: In function `std::vector<std::tr1::array<float*, 2ul>, std::allocator<std::tr1::array<float*, 2ul> > >::_M_check_len(unsigned long, char const*) const':
main.cpp:(.text._ZNKSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE12_M_check_lenEmPKc[_ZNKSt6vectorINSt3tr15arrayIPfLm2EEESaIS3_EE12_M_check_lenEmPKc]+0x4c): undefined reference to `std::__throw_length_error(char const*)'
/tmp/ccZsz9el.o: In function `__gnu_cxx::new_allocator<std::tr1::array<float*, 2ul> >::deallocate(std::tr1::array<float*, 2ul>*, unsigned long)':
main.cpp:(.text._ZN9__gnu_cxx13new_allocatorINSt3tr15arrayIPfLm2EEEE10deallocateEPS4_m[_ZN9__gnu_cxx13new_allocatorINSt3tr15arrayIPfLm2EEEE10deallocateEPS4_m]+0x1c): undefined reference to `operator delete(void*)'
/tmp/ccZsz9el.o: In function `__gnu_cxx::new_allocator<std::tr1::array<float*, 2ul> >::allocate(unsigned long, void const*)':
main.cpp:(.text._ZN9__gnu_cxx13new_allocatorINSt3tr15arrayIPfLm2EEEE8allocateEmPKv[_ZN9__gnu_cxx13new_allocatorINSt3tr15arrayIPfLm2EEEE8allocateEmPKv]+0x2c): undefined reference to `std::__throw_bad_alloc()'
main.cpp:(.text._ZN9__gnu_cxx13new_allocatorINSt3tr15arrayIPfLm2EEEE8allocateEmPKv[_ZN9__gnu_cxx13new_allocatorINSt3tr15arrayIPfLm2EEEE8allocateEmPKv]+0x3c): undefined reference to `operator new(unsigned long)'
/tmp/ccZsz9el.o:(.eh_frame+0x4b): undefined reference to `__gxx_personality_v0'
collect2: error: ld returned 1 exit status
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