Eroare de compilare: user.cpp: In function ‘int cmp(pct, pct)’: user.cpp:15:31: error: ‘fabs’ was not declared in this scope if (a.x<b.x||(fabs(a.x-b.x)<0.001&&a.y<b.y)) return 1; ^ user.cpp: In function ‘int main()’: user.cpp:25:40: warning: format ‘%lf’ expects argument of type ‘double*’, but argument 3 has type ‘double’ [-Wformat=] fscanf(f,"%lf%lf",v[i].x,v[i].y); ^ user.cpp:25:40: warning: format ‘%lf’ expects argument of type ‘double*’, but argument 4 has type ‘double’ [-Wformat=] user.cpp:32:13: error: ‘c’ was not declared in this scope c=v[j].x*v[j].x+v[j].y*v[j].y-d; ^ user.cpp:33:13: error: ‘b’ was not declared in this scope b=-2*v[j].x*e-2* ^ user.cpp:34:9: error: expected primary-expression before ‘}’ token } ^ user.cpp:34:9: error: expected ‘;’ before ‘}’ token user.cpp: In function ‘int cmp(pct, pct)’: user.cpp:17:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:25:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lf%lf",v[i].x,v[i].y); ^