double day,month;
start:
cout << "day:"; cin >> day;
cout << "month:"; cin >> month;
if (day<=0) return 0;
if (month<=0) return 0;
if ((day>=21 && month ==3) || (day>0 && month ==4)|| (day>0 && month ==5) ||(day<22 && month ==6)) // -------------------------------------------------start of the block
{
cout << "it's spring" << endl;
}
else if ((day>=22 && month ==6) || (day>0 && month ==7)||(day>0 && month ==8) || (day<23 && month ==9))
{
cout<< "it's summer"<< endl;
}
else if ((day>=23 && month ==9) || (day>0 && month ==10)||(day>0 && month ==11) || (day<24 && month ==12))
{
cout<< "it's autumn" <<endl;
}
else if ((day>=34 && month ==12) || (day>0 && month ==1)||(day>0 && month ==2) || (day<23 && month ==3))
{
cout<< "it's winter" << endl;
}
goto start; // loop back
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