Compilare: user.cpp: In member function ‘double POINT::panta(const POINT&)’: user.cpp:23:7: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation] if(fabs(1.0 * x - other.x) < eps) ^~ user.cpp:25:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’ return (1.0 * y - other.y) / (1.0*x - other.x); ^~~~~~ user.cpp: In function ‘int main()’: user.cpp:33:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trapez.in", "r", stdin); ^ user.cpp:34:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trapez.out", "w", stdout); ^ user.cpp:37:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:39:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &x, &y); ^