Eroare de compilare: user.cpp:6:16: error: ‘int y0’ redeclared as different kind of symbol int n,m,p,x0=1,y0=1; ^ 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/cstdio:41, 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:49:15: error: ISO C++ forbids decrementing a pointer of type ‘double (*)(double)throw ()’ [-fpermissive] y0--; ^ user.cpp:49:15: error: lvalue required as decrement operand user.cpp:67:21: warning: pointer to a function used in arithmetic [-Wpointer-arith] A[i+y0][j+x0]=1; ^ user.cpp:67:23: error: invalid types ‘char [210][210][double (*)(double)throw ()]’ for array subscript A[i+y0][j+x0]=1; ^ user.cpp:68:13: warning: pointer to a function used in arithmetic [-Wpointer-arith] l=2*n-1+y0; ^ user.cpp:68:13: warning: pointer to a function used in arithmetic [-Wpointer-arith] user.cpp:68:12: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] l=2*n-1+y0; ^ user.cpp:24:34: 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:25:36: 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:27:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&p); ^ user.cpp:29:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&a,&b,&c,&d); ^