Eroare de compilare: user.cpp:4:10: error: ‘int y1’ redeclared as different kind of symbol int t,x1,y1,x2,y2,x3,y3,x4,y4; ^ 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:242:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:16:65: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘double (*)(double)throw ()’ [-Wformat=] scanf("%d%d%d%d%d%d%d%d",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4); ^ user.cpp:17:34: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] if(arie(x1,y1,x2,y2,x3,y3)==arie(x1,y1,x2,y2,x4,y4)+arie(x1,y1,x3,y3,x4,y4)+arie(x2,y2,x3,y3,x4,y4)) printf("DA\n"); ^ user.cpp:5:5: error: initializing argument 2 of ‘int arie(int, int, int, int, int, int)’ [-fpermissive] int arie(int x1,int y1,int x2,int y2,int x3,int y3) ^ user.cpp:17:59: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] if(arie(x1,y1,x2,y2,x3,y3)==arie(x1,y1,x2,y2,x4,y4)+arie(x1,y1,x3,y3,x4,y4)+arie(x2,y2,x3,y3,x4,y4)) printf("DA\n"); ^ user.cpp:5:5: error: initializing argument 2 of ‘int arie(int, int, int, int, int, int)’ [-fpermissive] int arie(int x1,int y1,int x2,int y2,int x3,int y3) ^ user.cpp:17:83: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] if(arie(x1,y1,x2,y2,x3,y3)==arie(x1,y1,x2,y2,x4,y4)+arie(x1,y1,x3,y3,x4,y4)+arie(x2,y2,x3,y3,x4,y4)) printf("DA\n"); ^ user.cpp:5:5: error: initializing argument 2 of ‘int arie(int, int, int, int, int, int)’ [-fpermissive] int arie(int x1,int y1,int x2,int y2,int x3,int y3) ^