Eroare de compilare: user.cpp: In function ‘int arie(punct, punct, punct)’: user.cpp:12:63: error: ‘myabs’ was not declared in this scope return myabs(A.x*B.y+B.x*C.y+C.x*A.y-C.x*B.y-A.x*C.y-B.x*A.y); ^ user.cpp: In function ‘int main()’: user.cpp:21:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &q); ^ user.cpp:24:86: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d%d%d%d%d", &A.x, &A.y, &B.x, &B.y, &C.x, &C.y, &D.x, &D.y); ^ user.cpp: In function ‘int arie(punct, punct, punct)’: user.cpp:13:1: warning: control reaches end of non-void function [-Wreturn-type] } ^