Што не так С++
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#include
using namespace std;
int main()
{
double ab,ad,ax,ay,bx,by,dx,dy,cx,cy,o1,o2,d1,d2,v;
if(ax,ay,bx,by,dx,dy,cx,cy < 100);
cin>>ax>>" ">>ay;
cin>>bx>>" ">>by;
cin>>cx>>" ">>cy;
cin>>dx>>" ">>dy;
ab=bx-ax;
ad=ay-dy;
v=2*(ab*ab+ad*ad);
v=d1+d2;
d1=d2-ad;
o1=ad;
o2=ab;
o1,o2,d1,d2;~0,001;
cout<

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There are several issues in the code:

The #include directive is missing a header file.

The use of the << and >> operators is incorrect. They should be used with cin and cout, respectively, instead of directly with variables.

The condition if(ax,ay,bx,by,dx,dy,cx,cy < 100); is incorrect. The comparison should be done separately for each variable.

The values for o1, o2, d1, d2 are not calculated properly.

The comparison o1,o2,d1,d2;~0,001; does not make sense. It should be done using comparison operators (<, >, ==, etc.).

Here is the corrected code:

#include <iostream>
using namespace std;
int main()
{
double ab, ad, ax, ay, bx, by, dx, dy, cx, cy, o1, o2, d1, d2, v;
cout << "Enter values for ax and ay: ";
cin >> ax >> ay;
cout << "Enter values for bx and by: ";
cin >> bx >> by;
cout << "Enter values for cx and cy: ";
cin >> cx >> cy;
cout << "Enter values for dx and dy: ";
cin >> dx >> dy;
ab = bx - ax;
ad = ay - dy;
v = 2 * (ab * ab + ad * ad);
d1 = d2 = ad;
o1 = o2 = ab;
if (o1 + o2 + d1 + d2 < 0.001) {
cout << "Values are less than 0.001" << endl;
} else {
cout << "Values are not less than 0.001" << endl;
}
return 0;
}