Eroare de compilare: main.c: In function 'main': main.c:55:37: error: 'puncte' undeclared (first use in this function); did you mean 'punct'? 55 | if (fscanf(fin, "%ld %ld", &puncte[i].x, &puncte[i].y) != 2) | ^~~~~~ | punct main.c:55:37: note: each undeclared identifier is reported only once for each function it appears in main.c:64:15: error: 'k' undeclared (first use in this function) 64 | while(k>=2 && prod_vect(infasuratoare[k-2],infasuratoare[k-1],infasuratoare[k])<=0) | ^ main.c:71:24: warning: implicit declaration of function 'calc_area'; did you mean 'calc_arie'? [-Wimplicit-function-declaration] 71 | long double area = calc_area(hull, k); | ^~~~~~~~~ | calc_arie main.c:71:34: error: 'hull' undeclared (first use in this function) 71 | long double area = calc_area(hull, k); | ^~~~ Non zero exit status: 1