Write a program that lets you know if you can have a key or not, based on your role at the school.
First ask for the user’s role at the school. They can be a student, administrator, or a teacher. (And remember that capitalization is important! ‘Student’ is not the same as ‘student’.)
Example 1: Administrator or Teacher
For example, if this was the input:
Are you an administrator, teacher, or student?: teacher
This should be the output:
Administrators and teachers get keys!
Example 2: Student
And if this was the input:
Are you an administrator, teacher, or student?: student
This should be the output:
Students do not get keys!
(Note: You should also be able to handle a situation where the user enters a value other than administrator, teacher or student and tell them they must be one of the three choices!)
Example 3: Other
If they input anything else:
Are you an administrator, teacher, or student?: secretary
This should be the output:
You can only be an administrator, teacher, or student!
#include<iostream>
#include <math.h>
#include<iomanip>
using namespace std;
int main()
{
srand(time(0));
int a, b, c;
double x2, x1;
double x;
double d;
cin>>a>>b>>c;
d=pow(b,2)-4*a*c;
if(d<0)
cout << «решения нет»;
else{
if(d>0){
x1=(-1*b+sqrt(d))/2*a;
x2=(-1*b-sqrt(d))/2*a;
cout<< «x2= «<<x2 <<endl;
cout <<«x1=»<<x1<<endl;
}
else
if(d==0){
x=((-1*b)+d)/(2*a);
cout <<«x=»<< x <<endl;
}
}