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Pasted as C by Tim Hartmann ( 14 years ago )
#include <stdlib.h>
#include <stdlib.h>
#include <ctype.h>

main ()

{
     while(1)
{     
      char eingabe;
      float x,y;
      printf("\nF\x81r Hilfe H eingeben"); 
      printf("\n\nw\x84hle eine Rechenoperation \n\n 1 Addition (+)"
             "\n 2 Subtraktion (-)\n 3 Multiplikation (*)"
             "\n 4 Division (/)\n\n");
      printf("Bitte ein Rechenzeichen eingeben: \n\n");
      do{       
      eingabe=getchar();
}     while (isspace(eingabe));
      
      switch(toupper(eingabe))
{     case '+':
             printf("\ngib X ein: ");
             scanf("\n%f",&x);
             printf("\n%.0f + " , x);
             scanf("%f",&y);
             
             printf("\n\n%f + %f = %f\n\n\a\a" , x,y,x+y);
             
             system&#40;"pause"&#41;;
             system&#40;"cls"&#41;;

      case '-':
             printf("\ngib X ein: ");
             scanf("%f",&x);
             printf("\n%.0f - " , x);
             scanf("%f",&y);
             
             printf("\n\n%f - %f = %f\n\n\a\a" , x,y,x-y);

             system&#40;"pause"&#41;;
             system&#40;"cls"&#41;;
      
      case '*':
             printf("\ngib X ein: ");
             scanf("%f",&x);
             printf("\n%.0f x " , x);
             scanf("%f",&y);
             
             printf("\n\n%f x %f = %f\n\n\a\a" , x,y,x*y);
             
             system&#40;"pause"&#41;;
             system&#40;"cls"&#41;;  
             
      case  '/':
             printf("\ngib X ein: ");
             scanf("%f",&x);
             printf("\n%.0f / " , x);
             scanf("%f",&y);
             
             printf("\n\n%f / %f = %f\n\n\a\a" , x,y,x/y);

             system&#40;"pause"&#41;;
             system&#40;"cls"&#41;;
             
      case 'H':
             printf("\n\n real calc (c) by TimHartmann!"
                    "\n benutze die Rechenzeichen hinter der Operation"
                    "zur Auswahl"
                    "\n Um das programm zu beenden Tippe x\n\n");
             system&#40;"pause"&#41;;
             system&#40;"cls"&#41;;
             
      case 'X':
             exit(0);
             
      default:
             printf("ung\x81ltige Eingabe\n\n");
             
             system&#40;"pause"&#41;;       
               
   
}        
}
}

 

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