Question

Please can someone help me to finish this program? It is a C programming not a C++, when programming the program in linux I keep getting expected expression before || token, also please check if everything else is fine, maybe there is something else worng in my program and may ask me later to fix it, I am concern about the sin and cosine. The program is supposed to do all this:

1.Display a welcome message.

2.Prompt for the height above ground (we’re assuming a flat firing area) and accept anything above 0 (you can set a reasonable upper limit, such as 1 mile, if you wish). If the input is out of the acceptable range, print an error message and repeat the input until an acceptable value is input.

3.Similarly, prompt for the firing angle and accept between 90 and -90.

And, finally, prompt for the initial velocity (we’ll assume there is no acceleration due to firing or wind resistance). Pay attention to units; if your calculations are in meters and seconds, don’t prompt for feet and minutes unless you want to do the conversions.

4.Calculate the time and distance to impact. You’ll need to get the vertical and horizontal velocity vectors from the firing angle and the initial velocity. If the angle is positive, the time to return to the same height is 2 * initial vertical velocity / g. The time to continue to the ground is (height * 16) / (velocity * 15). This is a rough approximation but is good enough for this project. Add the two times together to get the time to impact and then multiply that by the horizontal velocity to get the distance to impact.

5.For your output, restate the user’s inputs and then display the time and distance to impact.

6.Prompt the user to see if they want to do another calculation and, depending on their input, return to the beginning or exit the program

And this is the program please any suggestions in the error that I am getting?? I rreally want this to compile and execute

C He Ale Options utters Tool A a include td ude nath tuoat eight angle, velocity, v velocity h velocity 9, 8 float tine e-0, tine cont tine inpact e inpact print ("Vn\t\t\t ****ilELCOIEWn')://welcone message intf eight above ground //prompt user to height ght f eight-1 eight 1639 eight i betwee ange print the error ness age mile and greater than whilelheight<1): eight 609 //loop ntil the correct high is entered 1ntt NTER tiring prompt user to get angle canf &angle //taking value of angle fron if (angles -90) II (angl, 90 angle is not between range print the error message RROR: angle should be 90 90 angle 90 II angle 90 printf tial velocity elocity- angle) velocity velocity Icos langle "velocity angle-0 time retum 2 v velocity)/g:I time impact time return +time ont inue distance inpact time impact *h v elocity //output int Firing angle: tWtsf angle intt itial velocity: t velocity At MtVert velocity f v velocity h velocity) int VtTine to ine intt At tl ine to continue: t e conti lt time to inpact: tlt f ,tine inpact a impact: Vt t f distance inpact): roject C L29 Abbrev We ome to he ng system. ponent 0 M Dunacs Tutorial key strol GNU Emacs Top 13 undamental emacs (adantooine rm2297@dantooine: Using username m 2297 ast login Wed Feb 8 22: 33:07 2017 from egri00a-12.egr.nau.edu rm2297 dantooine emaca project.c rm2297 dantooine: gcc -o project project.c project. In function main project. C:16 expected before token project. C:23 expected before token rm2297 dantooine: emaca project.c rm2297 dantooine: gcc -o project project.c project. In function main project. C:16 expected expression before token project. C:23 expected expression before token cm2297 dantooine emacs project.c 942 AM

Answer 1

The error is due to a syntax mistake in the while conditions. You can replace it with the following code to get rid of the errors:

do{
       printf("Enter height\n");
       scanf("%f",&height);
       if((height<1) || height>1609)
printf("Error: height should be less than 1 mile and greater than 0\n");
}while(height<1 || height >1609);
do{
       printf("Enter angle\n");
       scanf("%f",&angle);
       if((angle<=-90) || angle>=90)
printf("Error: angle should be between -90 and 90\n");
}while((angle<=-90) || angle>=90);

As you can see, we should not include a ";" before "||" in the while statement. Removing that will result in proper running of the code.