#include <iostream>#include <math.h>using namespace std;int main (){ int x = 0, y = 0, z = 0; double a, aa, b, bb, c, cc; cout << "Enter three triangle side lengths : "; cin >> x; cin >> y; cin >> z; a = pow(x,2) + pow(y,2); aa = pow(z,2); b = pow(x,2) + pow(z,2); bb = pow(y,2); c = pow(y,2) + pow(z,2); cc = pow(x,2); if ( x != 0 && y != 0 && z != 0 ) { if ( x + y > z && x + z > y && y + z > x ) { if ( a == aa || b == bb || c == cc ) cout << "This is a right triangle.\n"; else if( x != y && x != z ) cout << "This is a scalene triangle.\n"; else cout << "This is a isosceles triangle.\n"; } } else cout << "All three lengths must be entered."; return 0;}