Write a computer program that computes the duration of a projectile's

flight and its height above the ground when it reaches the target. As

part of your solution, write and call a function that displays instruc$-$

tions to the program user.

Problem Constant

G $=32\mathrm{.}17//$ gravitational constant

Problem Inputs

float theta $//$ input $-$ angle $($radians$)$ of elevation

float distance $//$ input $-$ distance $($ft$)$ to target

float velocity $//$ input $-$ projectile velocity $($ft$/$sec$)$

Problem Outputs

float time $//$ output $-$ time $($see$)$ of flight

float height $//$ output $-$ height at impact

Relevant Formulas

time$=$ distance$/($velocity $*$ cos$($theta$))$

g x time$2$

height $=($velocity x sin$($theta$)$ x time $)-\{($g $*$ time$^2)/2\}$

Try your program on these data sets.

Inputs Data Set $1$ Data Set $2$

Angle of elevation $0\mathrm{.}3$ radian $0\mathrm{.}71$ radian

Velocity $800$ ft$/$sec $1,600$ ft$/$ sec

Distance to target $11,000$ ft $78,670$ ft

This is what I have and I am not sure why it is not working any help would be great.

#define $\_$CRT$\_$SECURE$\_$NO$\_$DEPRECATE

$//$ Save default warning level $($push to the stack$)$

#pragma warning$($push$)$

$//$ Disable Microsoft Visual C$++$ WARNING C$6031-$ Return value ignored: 'scanf'

#pragma warning$($disable: $6031)$

$//$ Compiler Includes

#include

#include

$//$ Constants

$//$Gravitational constant

#define G $32\mathrm{.}17$

void displayInstructions$()\{$

printf$("$This program computes the duration of a projectile flight and its height above the groumd when it reaches the target.

$")$;

printf$("$Please provide the following information:

$")$;

printf$("1.$ Angle of elevation in radians.

$")$;

printf$("2.$ Distance to the target in feet.

$")$;

printf$("3.$ Projectile velocity in feet$/$second$.$

$")$;

$\}$

int main$($void$)\{$

$//$ Local Variables

double theta $=0\mathrm{.}0$;

double time $=0\mathrm{.}0$;

double velocity $=0\mathrm{.}0$;

double height $=0\mathrm{.}0$;

double distance $=0\mathrm{.}0$;

$//$ call display instructions function

displayInstructions$()$;

$//$ prompt and get angle of elevation in radians

printf$("$Enter the angle of elevation $($in radians$)$:

$")$;

scanf$("\%1$f$",$ &theta$)$;

if $($theta $<=0||$ theta $>1\mathrm{.}57)\{$

$//$ prompt and get distance to the target

printf$("$

Enter the distance to the target $($in ft$)$:

$")$;

scanf$("\%1$f$",$ &distance$)$;

if $($distance $>0)\{$

$//$ prompt and get velocity

printf$("$

Enter the velocity $($in ft$/$sec$)$:

$")$;

scanf$("\%1$f$",$ &velocity$)$;

if $($velocity $>0)\{$

$//$ calculate time

time $=$ distance $/($velocity $*$ cos$($theta$))$;

$//$ calculate height

height $=($velocity $*$ sin$($theta$)*$ time$)-(($G $*$ pow$($time$,1))/2)$;

if $($height $>=0)\{$

printf$("$

Height $=\%\mathrm{.}2$lf feet

Time $=\%\mathrm{.}2$lf seconds

$",$ height, time$)$;

$\}$

$\}$

else$\{$

printf$("$You have entered an invalid value for velocity."$)$;

$\}$

$\}$

else $\{$

printf$("$You have entered an invalid value for distance."$)$;

$\}$

$\}$

else $\{$

printf$("$You have entered an invalid theta value."$)$;

$\}$

return $0$;