Exercise 3: Write a program that, given the number of kilometers traveled and th

Question

Exercise 3:

Write a program that, given the number of kilometers traveled and the gallons of gasoline consumed, produces the kilometers per gallon and the kilometers per liter. In your program you should define a function for kilometers per gallon, and another function for kilometers per liter. This program should repeat as many times as the user wishes.

1 Liter = 0.264172051 Gallon

1 Gallon = 3.7854118 Liter

Optional: Let your program not case sensitive to the input, which is accepting Y or N regardless of their case (capital or small).

Hint: this can be done using if statement or using a function of the ctype library.

Explanation / Answer

#include<stdio.h>
#include<ctype.h>

double kmpg(float dist, float gas)
{
    return dist/gas;
}

double kmpl(float dist, float gas)
{
    return (dist*3.7854118)/gas;
}

int main()
{
    double dist, gas;
    char choice;

    while(1)
    {
        printf("Enter the no.of distance travelled in kilometers : ");
        scanf("%lf",&dist);
        printf("Enter the quantity of gasoline consumed in gallons : ");
        scanf("%lf",&gas);

        printf(" Distance covered per gallon of gasoline is %lf km. ",kmpg(dist,gas));
        printf("Distance covered per litre of gasoline is %lf km. ",kmpl(dist,gas));

        printf(" Do you want to try again? (press Y or N) : ");
        scanf("%c",&choice);
        if(choice ==' ')
        {
            scanf("%c",&choice);
        }

        while(choice!='Y' && choice!='y' && choice!='N' && choice!='n')
        {
            printf("Incorrect choice. Press Y or N : ");
            scanf("%c",&choice);
        }

        if(choice == 'N' || choice == 'n')
        {
            break;
        }
        else
        {
            printf(" ");
        }
    }

    return 0;
}

The above is the required code for the program.

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