Eroare de compilare: user.cpp:15:13: error: ‘int y1’ redeclared as different kind of symbol int x1, x2, y1, y2, Ans, n, m; ^ 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 ‘void lee(int, int)’: user.cpp:19:9: warning: unused variable ‘Pas’ [-Wunused-variable] int Pas = 0; ^ user.cpp: In function ‘int main()’: user.cpp:50:44: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘double (*)(double)throw ()’ [-Wformat=] scanf("%d %d %d %d", &x1, &y1, &x2, &y2); ^ user.cpp:53:8: error: ISO C++ forbids incrementing a pointer of type ‘double (*)(double)throw ()’ [-fpermissive] ++ y1; ^ user.cpp:53:8: error: lvalue required as increment operand user.cpp:55:15: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] lee(x1, y1); ^ user.cpp:18:6: error: initializing argument 2 of ‘void lee(int, int)’ [-fpermissive] void lee(int x, int y){ ^