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a guest Oct 21st, 2019 78 Never
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  1. #include <iostream>
  2. #include <cmath>
  3. using std::cin;
  4. using std::cout;
  5. using std::endl;
  6.  
  7. int main() {
  8.  
  9.     double luku;
  10.     char choice;
  11.     char L = 'L';
  12.     int l = 'l';
  13.     double tulos;
  14.     double tulos1;
  15.     double tulos2;
  16.     double tulos3;
  17.  
  18.     cout << "Valitse luku. \n";
  19.     cin >> luku;
  20.     cout << "Valitse laskutoimitus (1=Neliojuuri 2=log 3=exp 4=tan L = Lopetus) \n";
  21.     cin >> choice;
  22.  
  23.     while (choice != 'L' && choice != 'l')
  24.     {
  25.         if (choice == '1')
  26.         {
  27.             tulos = sqrt(luku);
  28.             cout << "Syottamasi luvun neliojuuri on " << tulos << endl;
  29.             cout << "Valitse luku. \n";
  30.             cin >> luku;
  31.             cout << "Valitse laskutoimitus (1=Neliojuuri 2=log 3=exp 4=tan L = Lopetus) \n";
  32.             cin >> choice;
  33.         }
  34.         else if (choice == '2')
  35.         {
  36.             tulos1 = log(luku);
  37.             cout << "syottamasi luvu logaritmi on " << tulos1 << endl;
  38.             cout << "Valitse luku. \n";
  39.             cin >> luku;
  40.             cout << "Valitse laskutoimitus (1=Neliojuuri 2=log 3=exp 4=tan L = Lopetus) \n";
  41.             cin >> choice;
  42.         }
  43.         else if (choice == '3')
  44.         {
  45.             tulos2 = exp(luku);
  46.             cout << "Syottamasi luvun eksponentti on " << tulos2 << endl;
  47.             cout << "Valitse luku. \n";
  48.             cin >> luku;
  49.             cout << "Valitse laskutoimitus (1=Neliojuuri 2=log 3=exp 4=tan L = Lopetus) \n";
  50.             cin >> choice;
  51.         }
  52.  
  53.         else if (choice == '4')
  54.         {
  55.             tulos3 = tan(luku);
  56.             cout << "Syottamasi luvun tangentti on " << tulos3 << endl;
  57.             cout << "Valitse luku. \n";
  58.             cin >> luku;
  59.             cout << "Valitse laskutoimitus (1=Neliojuuri 2=log 3=exp 4=tan L = Lopetus) \n";
  60.             cin >> choice;
  61.         }
  62.  
  63.     }
  64.     cout << "Ei laskemista, selkee! \n";
  65.     system("pause");
  66.     return 0;
  67. }
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