3.3 Write a program to prompt for a score between 0.0 and 1.0. If the score is out of range, print an error. If the score is between 0.0 and 1.0, print a grade using the following table:
Score Grade
>= 0.9 A
>= 0.8 B
>= 0.7 C
>= 0.6 D
< 0.6 F
If the user enters a value out of range, print a suitable error message and exit. For the test, enter a score of 0.85.
Answers
#include<iostream.h>
#include<conio.h>
void main( )
{
clrscr( );
float score;
cout<<"enter score";
cin>>score; // score =0.85 (as test)
if(score>=0.9&&score<=1.0)
{
cout<<"A";
}
else if ( score<=0.9&&score>0.8)
{
cout<<"B"
}
else if(score <=0.8&& score>0.7)
{
cout<<"C";
}
else if(score<=0.7&&score>=0.6)
{
cout<<"D";
}
else if(score<0.6)
{
cout<<"F"
}
else
{
cout<<"error occurred";
}
getch( );
}
output:- (for 0.85)
B
Answer:
Score = float(input("Enter a number between 0.1 and 1.0\n"))
if 0.1 <= Score <= 1.0:
if 0.9 >= Score:
print("Grade A")
elif Score >= 0.8:
print("Grade B")
elif Score >= 0.7:
print("Grade C")
elif Score >= 0.6:
print("Grade D")
else:
print("Grade F")
else:
print("Enter a number between 0.1 and 1.0")
Explanation:
Score = float(input("Enter a number between 0.1 and 1.0\n"))
In the above statement, we are asking for input, and converting it into a Float, and then storing it as a variable called 'Score'.
if 0.1 <= Score <= 1.0:
if 0.9 >= Score:
print("Grade A")
elif Score >= 0.8:
print("Grade B")
elif Score >= 0.7:
print("Grade C")
elif Score >= 0.6:
print("Grade D")
else:
print("Grade F")
The statements above will execute only if the input stored in the variable 'Score' is larger than 0.1 and smaller than 1.0.
else:
print("Enter a number between 0.1 and 1.0")
If not, the above statement will be executed and "Enter a number between 0.1 and 1.0" will be printed out as an error message.