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posted by  Nrk on 11/6/2009 4:35:33 PM  |  status: Closed  |  Earned Karma: 10

C programing help required urgent!

Course Textbook Chapter Problem Needs by
N/A N/A N/A N/A 11/7/2009 at 11:00:00 AM
Question Details:
Write a program in C language using switch statement that 
finds density, pressure by the following formula
1.d=m/v
2.
i.e the program should ask user to enter numbers
if user want to find density press 1 or if user want to find pressure press2
if user  want to exit press3
Good

AAnswers:

Answer Question Ask for clarification
Rookie
Karma Points: 11
posted by Anonymous on 11/6/2009 5:07:27 PM  |  status: Live
Asker's Rating: Helpful   
Response Details:
double n,m,v,d,p1,p2,v1,v2;

switch (n) {

case 0:

cout<<" wrong no.";

break;

case 1:

cout<<" enter the value of mass :";

cin>>m;

cout<<" enter the value of volume :"

cin>>v;

cout<<" density = "<<d=m/v;

  break;

   case 2:

    cout<<" enter the value of p1 :";

cin>>p1;

cout<<" enter the value of v1 :"

cin>>v1;

    cout<<" enter the value of v2 :"

cin>>v2;

cout<<" result = "<<p2=(p1*v1)/v2;

break;

}
Pupil
Karma Points: 81
posted by dropt on 11/6/2009 5:39:46 PM  |  status: Live
Asker's Rating: Helpful   
Response Details:
I don't have a compiler handy to check for errors, but this should work for you.  Let me know if you need some clarification



#include <iomanip>
#include <iostream>


using namespace std;

int main(){                                        //start int Main()
    char choice;
    cout << "Enter a for density or b for volume: ";
    cin >> choice;
    switch(choice){
                   case 'a':
                        float m;
                        float v;
                        cout << "\nEnter the mass: ";
                        cin >> m;
                        cout << "\nEnter the volume: ";
                        cin >> v;
                        float d=m*v;
                        cout << "\nThe density is: ";
                        cout << d;
                        break;

                   case 'b':
                        float p1;
                        float v1;
                        float v2;
                        cout >> "\n Enter p1: ";
                        cin << p1;
                        cout >> "\n Enter v1: ";
                        cin << v1;
                        cout >> "\n Enter v2: ";
                        cin << v2;
                        float p2=(p1*v1)/v2;
                        cout >> "\n The pressure is: ";
                        cout >> p2;
                         break;

                   default:
                         cout >> "\nYou entered an invalid option!";
                         break;
                   }
    return EXIT_SUCCESS;                           //Program finished!
}//end int Main()
Oracle
Karma Points: 31,807
posted by rapunzel on 11/6/2009 8:43:51 PM  |  status: Live
Asker's Rating: Lifesaver   
Response Details:
please rate - thanks

#include <stdio.h>
#include<conio.h>
int main()
{double d,m,v,v2,p1,p2;
int num;
printf("Do you want to find density or pressure?\n");
printf("1 to find density\n2 find pressure\n");
scanf("%d",&num);
switch(num)
{case 1:printf("Enter the value for m: ");
        scanf("%lf",&m);
        printf("Enter the value for v: ");
        scanf("%lf",&v);
        printf("The density is %lf\n", m/v);
        break;
        
 case 2:printf("Enter the value for p1: ");
        scanf("%lf",&p1);
        printf("Enter the value for v1: ");
        scanf("%lf",&v);
        printf("Enter the value for v2: ");
        scanf("%lf",&v2);
        printf("The pressure is %lf\n", (p1*v)/v2);
        break;
 default: printf("Invalid Input-program aborted\n");
}
getch();
return 0;
}
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