Need help with homework please ...

[turbosupra]

My syntax is wrong, and I can't figure out why. I'm very new to c++ and this is a very basic program, but I can't get my variables set right and I keep getting the error
"error C2440: '=' : cannot convert from 'const char [2]' to 'const char' 1> There is no context in which this conversion is possible"
when I try and debug it. Help would be appreciated.

Also, what are the appropriate variable declarations, for different types of data?

Thanks for reading.

// module3.cpp : Defines the entry point for the console application.
//

/*
    If (score >= 85) then
        Set grade = �A� Else    
    If (score >= 75) then
           Set grade = �B�
        Else
           If (score >= 65) then
              Set grade = �C�
           Else
              If (score >= 55) then
                 Set grade = �D�
              Else
                 Set grade = �F�
              End if // score >= 55
           End if // score >= 65
        End if // score >= 75
     End if // score >= 85

Your assignment is to convert this pseudocode into a C++ program. Use the following template for your program and remember to maintain all the blank lines, spaces, and general alignment. Then replace the areas that have been highlighted in yellow with your code. Do not change any of the other code.
Code Template for Exercise 1 */
/****************************************************/
/* File: name of your file with the source code     */
/*                                                  */
/* Created by: give your name                       */
/* Date: give the date                              */
/*                                                  */
/* Program to determine course grade                */
/*                                                  */
/* Inputs: (keyboard)                               */
/* 1. Float - weighted total points (<= 100)        */
/*                                                  */
/* Output:                                          */
/* letter grade using pseudocode grading policy     */
/*                                                  */
/* Algorithm: Comparisons using if-then-else        */
/*                                                  */
/****************************************************/
#include <iostream>

 using namespace std ;

 int main() 
{

     //Declare score and grade appropriately as variables.
		float score;
		int grade;

     // read in total score 

     cout << endl ;
     cout << "Enter total score (float, must be <= 100) : " ; 
     cin >> score ; 


	 if (score >= 85 )
	 {
		 grade = "A";
	 }

	 /*
		 if (score >= "85")
			 grade = "A";
		 if (score >= "75" + <= "84")
			 grade = "B";
		 if (score >= "65" + <= "74")
			 grade = "C";
		 if (score >= "55" + <= "64")
			 grade = "D";
		 if (score <= "54")
			 grade = "Drop the class";
		 */



     // display the result 

     cout << endl ; 
     cout << "Your grade for class is: " << grade << endl ; 

     return (0); // terminate with success

 }

[VictorN]

In what line of your code do you get this error?

[Rich2189]

Originally Posted by turbosupra

            int grade = 0;


	 if (score >= 85 )
	 {
		 grade = "A";
	 }



 }

I guess it is this section of code which is causing that particular error, you cannot store a string literal into an integer.

Try declaring grade as type char and assigning it character literals.

The syntax in your commented out if statement is incorrect. There are plenty of on line tutorials which will discuss how to do this correctly.

[turbosupra]

If you mean declaring it as

char grade = 0;

(is that the proper syntax)

I've tried that, and for some reason that did not work either?

Originally Posted by Rich2189

I guess it is this section of code which is causing that particular error, you cannot store a string literal into an integer.

Try declaring grade as type char and assigning it character literals.

The syntax in your commented out if statement is incorrect. There are plenty of on line tutorials which will discuss how to do this correctly.

[hoxsiew]

grade = "A";

Should be:

grade = 'A';

In C++, the compiler treats any thing between two double quotes as a character array with a NULL terminator so "A" is literally a char[2]. Single quotes on the other hand tell the compiler to treat the value as a single char (the value of which is the ASCII value of the character) which is an integral value and can be used in comparisons and assignments.

[turbosupra]

And that makes perfect sense with the error message I was receiving ... wow I must have spent 2 hours screwing with that, over an apostrophe vs quote ... lol!

Thanks for the help, you're the man! (or woman!)

Originally Posted by hoxsiew

grade = "A";

Should be:

grade = 'A';

In C++, the compiler treats any thing between two double quotes as a character array with a NULL terminator so "A" is literally a char[2]. Single quotes on the other hand tell the compiler to treat the value as a single char (the value of which is the ASCII value of the character) which is an integral value and can be used in comparisons and assignments.