Eroare de compilare: In file included from user.c:1:0: user.c: In function ‘main’: user.c:10:32: error: expected expression before ‘v’ assert(scanf("%lf%lf",&v[i].x,&v[i].y)==2),assert(-10000000<=v[i].x&&v[i].x<=10000000),assert(-10000000<=v[i].y&&v[i].y<=10000000); ^ user.c:10:70: error: expected expression before ‘v’ assert(scanf("%lf%lf",&v[i].x,&v[i].y)==2),assert(-10000000<=v[i].x&&v[i].x<=10000000),assert(-10000000<=v[i].y&&v[i].y<=10000000); ^ user.c:10:51: warning: left-hand operand of comma expression has no effect [-Wunused-value] assert(scanf("%lf%lf",&v[i].x,&v[i].y)==2),assert(-10000000<=v[i].x&&v[i].x<=10000000),assert(-10000000<=v[i].y&&v[i].y<=10000000); ^ In file included from user.c:1:0: user.c:10:114: error: expected expression before ‘v’ assert(scanf("%lf%lf",&v[i].x,&v[i].y)==2),assert(-10000000<=v[i].x&&v[i].x<=10000000),assert(-10000000<=v[i].y&&v[i].y<=10000000); ^ user.c:10:95: warning: left-hand operand of comma expression has no effect [-Wunused-value] assert(scanf("%lf%lf",&v[i].x,&v[i].y)==2),assert(-10000000<=v[i].x&&v[i].x<=10000000),assert(-10000000<=v[i].y&&v[i].y<=10000000); ^ user.c:11:10: error: expected identifier or ‘(’ before ‘[’ token for(v[n]=v[0],i=0;i<n;++i) ^ user.c:12:17: error: expected ‘)’ before ‘.’ token s+=(v[i].x*v[i+1].y-v[i+1].x*v[i].y); ^ user.c:12:45: error: expected expression before ‘;’ token s+=(v[i].x*v[i+1].y-v[i+1].x*v[i].y); ^