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#include <iostream>
using namespace std;
 
int main() {
	cout << "Podaj dl. bokow trojkata:\n";
    float a, b, c;
    cout << "a = ";
    cin >> a;
    cout << "b = ";
    cin >> b;
    cout << "c = ";
    cin >> c;
 
    if( CzyBedzieTr( a, b, c ) )
    {
        cout << "Mozna z tego zbudowac trojkat";
 
        RodzTr trojkat;
        trojkat = prost;
 
        switch( trojkat )
        {
        case prost:
            cout << " prostokatny";
            break;
        case ostr:
            cout << " ostrokatny";
            break;
        case rozwart:
            cout << " rozwartokatny";
            break;
        }
 
        cout << " o polu " <<( PoleTr( a, b, c ) ) << "\n";
    }
    else
         cout << "Z tego nie da sie zrobic trojkata!\n";
 
    system( "pause" );
	return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:14:30: error: ‘CzyBedzieTr’ was not declared in this scope
     if( CzyBedzieTr( a, b, c ) )
                              ^
prog.cpp:18:9: error: ‘RodzTr’ was not declared in this scope
         RodzTr trojkat;
         ^
prog.cpp:18:16: error: expected ‘;’ before ‘trojkat’
         RodzTr trojkat;
                ^
prog.cpp:19:9: error: ‘trojkat’ was not declared in this scope
         trojkat = prost;
         ^
prog.cpp:19:19: error: ‘prost’ was not declared in this scope
         trojkat = prost;
                   ^
prog.cpp:23:14: error: the value of ‘prost’ is not usable in a constant expression
         case prost:
              ^
prog.cpp:19:19: note: ‘prost’ was not declared ‘constexpr’
         trojkat = prost;
                   ^
prog.cpp:26:14: error: ‘ostr’ was not declared in this scope
         case ostr:
              ^
prog.cpp:29:14: error: ‘rozwart’ was not declared in this scope
         case rozwart:
              ^
prog.cpp:34:48: error: ‘PoleTr’ was not declared in this scope
         cout << " o polu " <<( PoleTr( a, b, c ) ) << "\n";
                                                ^

Standard output is empty