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#include <cmath> #include <iostream> using namespace std; struct point { float x; float y; float length(point pt){ return sqrt(pow(pt.x - x, 2.0f) + pow(pt.y - y, 2.0f)); } }; int main(){ point A = {1, 1}; point B = {3, 2}; point C = {5, 5}; float p = (A.length(B) + A.length(C) + B.length(C)) / 2; float S = sqrt(p*(p - A.length(B))*(p - A.length(C))*(p - B.length(C))); cout<<"p= "<<p<<endl; cout<<"S= "<<S<<endl; return 0; }
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