Eroare de compilare: user.cpp:12:57: error: ‘int y0’ redeclared as different kind of symbol int n, m, p, x[205], y[205], mat[205][205], nr, mr, x0, y0; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/utility:68, from /usr/include/c++/4.8/algorithm:60, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:242:1: error: previous declaration of ‘double y0(double)’ __MATHCALL (y0,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:85:11: error: ISO C++ forbids incrementing a pointer of type ‘double (*)(double)throw ()’ [-fpermissive] y0++; ^ user.cpp:85:11: error: lvalue required as increment operand user.cpp:89:11: error: ISO C++ forbids incrementing a pointer of type ‘double (*)(double)throw ()’ [-fpermissive] y0++; ^ user.cpp:89:11: error: lvalue required as increment operand user.cpp:91:14: warning: pointer to a function used in arithmetic [-Wpointer-arith] mr=2*n-1+y0; ^ user.cpp:91:14: warning: pointer to a function used in arithmetic [-Wpointer-arith] user.cpp:91:13: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] mr=2*n-1+y0; ^ user.cpp:65:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("colaj.in", "r", stdin); ^ user.cpp:66:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("colaj.out", "w", stdout); ^ user.cpp:68:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%d%d\n", &n, &p, &m); ^ user.cpp:71:83: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d\n", &drept[i].a, &drept[i].b, &drept[i].c, &drept[i].d); ^