Eroare de compilare: user.cpp:9:28: error: ‘int yn’ redeclared as different kind of symbol int n,i,j,x1,yy1,x2,yy2,xn,yn,p,u,mid,ok,nr,semn,l,a; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/cstdio:41, from user.cpp:1: /usr/include/bits/mathcalls.h:243:1: error: previous declaration of ‘double yn(int, double)’ __MATHCALL (yn,, (int, _Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:46:15: error: assignment of function ‘double yn(int, double)’ yn=(v[i].y+v[j].y)/2; ^ user.cpp:46:15: error: cannot convert ‘int’ to ‘double(int, double)throw ()’ in assignment user.cpp:47:27: error: invalid operands of types ‘int’ and ‘double(int, double)throw ()’ to binary ‘operator-’ x1=xn-(v[j].y-yn); ^ user.cpp:48:30: warning: pointer to a function used in arithmetic [-Wpointer-arith] yy1=yn+(xn-v[i].x); ^ user.cpp:48:19: error: invalid conversion from ‘double (*)(int, double)throw ()’ to ‘int’ [-fpermissive] yy1=yn+(xn-v[i].x); ^ user.cpp:49:27: error: invalid operands of types ‘int’ and ‘double(int, double)throw ()’ to binary ‘operator-’ x2=xn+(v[j].y-yn); ^ user.cpp:50:30: warning: pointer to a function used in arithmetic [-Wpointer-arith] yy2=yn-(xn-v[i].x); ^ user.cpp:50:19: error: invalid conversion from ‘double (*)(int, double)throw ()’ to ‘int’ [-fpermissive] yy2=yn-(xn-v[i].x); ^