Einstine calculator Mark 2

This is a discussion on Einstine calculator Mark 2 within the C Programming forums, part of the General Programming Boards category; Hi again, took the advice given to me and last night in I played around with the code trying out ...

  1. #1
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    Join Date
    Aug 2003
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    7

    Einstine calculator Mark 2

    Hi again, took the advice given to me and last night in I played around with the code trying out different things until I came to the code below. I did try putting in do while loop before the switch but kept getting a error, so could some tell me were to put it? I tidied up the code a bit too. I think there no more mistakes now.I would have fixed the program the first time but I lost the disk with the code and as I said I just found it.

    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <math.h>
    
    /*
    Author :A.Mac Hugh
    Date: 31-8-2003
    Version:1.1 beta*/
    void engery ();         /* function   */
    void lenght ();
    void time_1 ();      /*  prototypes*/
    void momentum ();
    void mass ();
    void Kenetic_Eng ();
    void st();
    
    
    #define c 3E8
    
    int main()
    {
    int menu (); /* function prototype*/
    
         printf("\n\tWelcome to Machsofts Einstine calculator.\n"
          "\tThis program will \n\t "
          "calculate all of the equatios for Einstines Theroy of Special General Relativity.");
    	 printf("\n\tThis is copyright Machsoft INC 2002");
    	 printf("\n\tVersion 1.1 Beta\n\n\n");/* intoduction*/
    
    	 
    
    	 menu (); /*fuction beging run*/
    
    return menu();
    
    }
    
    int menu (){
    int nums;
    /* ask user for therir option*/
       printf("\n\n\n");
       printf("\n\n\nSlect from 1-0 and  hit enter after  choice\n\n");
       printf("\t\tTo calculate Engery  press \t\t\t(1)\n");
       printf("\t\tTo calculate Lenght contraction press \t\t(2)\n");
       printf("\t\tTo calculate Time dialation press \t\t(3)\n");
       printf("\t\tTo calculate Relativistic Momentum \t\t(4)\n");
       printf("\t\tTo calculate Relarive Mass  press \t\t(5)\n");
       printf("\t\tTo calculate Kenetic Engery \t\t\t(6)\n");
       printf("\n\t\t\tTo exit  press (0) then enter\n");
    
    scanf("%d",& nums);/*get option*/
    
     /*Switich statment for chosesing option*/
    
    switch (nums){
    
    
           case 0:
           exit(0);
           break;
    
           case 1 :
           engery();
           printf("\n\n)");
           break;
    
           case 2:
           lenght();
           printf("\n\n)");
           break;
    
           case 3:
           time_1();
           printf("\n\n)");
           break;
    
           case 4:
           momentum();
           printf("\n\n)");
           break;
    
           case 5:
           mass();
           printf("\n\n)");
           break;
    
           case 6:
           Kenetic_Eng();
           printf("\n\n)");
           break;
    
           case 1701:
           st();
           printf("\n\n)");
           break;
    
           default:/*invalid option*/
           printf("\aInvaiid Option \n\nEnter choice again \n\n");
           printf("\n\n\n");
           break;
    
                 }
     
     }
    
    
    
    
    
    /* Fuction name :engery
     
    Fuction varibles( All floats) : e engery
                                    m mass
    				   
    
    Purpose: Ask user to enter in the mass.Works out the engery .
    
    Prints out engery in joules*/
    
    void engery (){     
    
    float e;
    float m;
    
        printf("This works out Mister Einstein most famous equation E=MC squared\n\nE=Engery\n\nM=Mass\n\n C = The speed of light\n\n");
        printf(" Please enter in the values for the mass (m)\nand press enter\n\n" );/*ask user enter in values*/
        scanf("%f",&m);/* get values*/
    
        e=c*c*m;
    
        printf("\nThe Engery is %e joules \n\t\n",e);/* prints out engery*/
    
    
    
    }
    
     /* Fuction name :lenght
     
    Fuction varibles( All doubles) : l_0 orignal lenght 
    				                l_1 lenght 
    				                v velocity 
    
    Purpose: Ask user to enter in the orignal lenght and velocity.Works out lenght.
    Prints out lenght*/
    void lenght (){     
    float l_0 ;
    float l_1;
    float v;
    
    
    	printf("This works Lenght contraction equation\n\n ");
    	printf(" Please enter in the values for \nthe orgnal lenght and the velocity \nPress enter after each value\n \n");/*ask user enter in values*/
    	scanf("%f%f",&l_0,&v);/* get values*/
    
        l_1=l_0*sqrt(1-(v*v)/(c*c));
    
        printf("\nThe lenght is %e meters\n\t\n",l_1);/* prints out lenght */
    
    }
    
    /* Fuction name :time
     
    Fuction varibles( All floats) : t_0 time at rest
                                     t time
    								 v velocity
                                    
    				   
    				    
    
    Purpose: Ask user to enter in the time at rest.Works out works time.
    Prints out time*/
    void time_1 (){
    float t ;
    float t_1;
    float v;
    
    
    
    	printf("This works Time dialation equation\n\n ");
    	printf(" Please enter in the values for\n the time at rest and the velocity.\nPressenter after each vaule\n\n");/*ask user enter in values*/
    	scanf("%f%f",&t_1,&v);/* get values*/
    
        t=t_1/sqrt(1-(v*v)/(c*c));
    
        printf("\n\n\n\n\n\n\nThe time is %e seconds\n\t\n",t);/* prints out time */
    
    }
    
    
    /* Fuction name :momentum
     
    Fuction varibles( All floats) :  m_0 orignal mass
                                     p  momentum
    								 v velocity
                                    
    				   
    				    
    
    Purpose: Ask user to enter in the ogrignal mass and velocity.Works out works momentum.
    Prints out momentum*/
    void momentum (){
    float p ;
    float m_0;
    float v;
    
    	printf("This works  equation Relativistic Momentum\n\n");
    	printf(" Please enter in the values \nfor the orignal mass and the velocity \nPress enter after each value\n\n");/*ask user enter in values*/
    	scanf("%f%f",&m_0,&v);/* get values*/
    
    	p=(m_0)*(v)/sqrt(1-(v*v)/(c*c));
    
        printf("\nThe momentum is %e\n\t\n",p);/* prints out momentum*/
    
    }
    
    /* Fuction name :Kenetic_Eng
     
    Fuction varibles( All floats) :  m_0 ogrignal mas
                                     v velocity
    								 ke kentic_Eng
                                    
    				   
    				    
    
    Purpose: Ask user to entert in the ogrignal mass and velocity.Works out works kentic engery.
    Prints out Kentic engery*/
    void Kenetic_Eng (){
    float ke ;
    float m_0;
    float v;
    
    	printf("This works   Kenetic Engery equation");
    	printf(" Please enter in the values for \nthe orignal mass and the velocity \n Press enter after each value\n");/*ask user enter in values*/
    	scanf("%f%f",&m_0,&v);/* get values*/
    
    	ke=(m_0)*(c)*sqrt(1-(v*v)/(c*c));
    
        printf("\nThe Kenetic Engery is %e\n\t\n",ke);/* prints out KE*/
    
    }
    
    /* Fuction name :mass
     
    Fuction varibles( floats) :      m_0 ogrignal mas
                                     v velocity
    								 m kentic_Eng
                                    
    				   
    				    
    
    Purpose: Ask user to entert in the ogrignal mass and velocity.Works out works mass.
    Prints out mass*/
    void mass (){
    float m;
    float m_0;
    float v;
    
          printf("This works Relarive Mass equation\n\n ");
          printf(" Please enter in the values \nfor the orignal mass   and the velocity \nPress enter after each value\n\n");/*ask user enter in values*/
          scanf("%f%f",&m_0,&v);/* get values*/
    
          m=(m_0)/sqrt(1-(v*v)/(c*c));
    
          printf("\nThe momentum is %e \n\n\n",m);/* prints out mass*/
    
     
    
    }
      /*Ester Egg fuction*/
    void st(){
    
        printf( "\n\nUSS ENTERPRISE NCC-1701-E\n\n\n LAUNCHED IN 2372\n\n\nCO CAPTIAN JEAN -LUC PICARD\n\n\n XO  CRMD.WILLIAM T RIKER\n\n\n 2ND XO LT.CRMD DATA\n\n\n");
    
    
                                    /*prints out ester egg.What do you think???????*/
    
        }

  2. #2
    Registered User Draco's Avatar
    Join Date
    Apr 2002
    Posts
    463
    I found no problems in your code. I compiled it and it ran fine. The only possible problem is if you wanted the program to go back to the menu after the easter egg, when I ran it it quit straight out.

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