Function Problem

Got it to work!! Thanks for the help

Code:

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#include <stdio.h>

/* Function Prototypes */

int getScore();
char convertGrade(int numScore);
void showGrade(int numScore, char letterGrade);

int main()
{

        int numScore;
        int letterGrade;

        getScore();
        convertGrade(numScore);
        showGrade(numScore, letterGrade);

        return (0);
}

int getScore()
{
        int numScore;                                          /*Numeric exam score*/

                                                                /* User entry of numeric exam score*/
        printf("Please enter your numeric exam score and press return> \n");
        scanf("%d",&numScore);

        return(numScore);
}

char convertGrade(int numScore)                                  /* Converts numScore number grade into a letter grade */
{
        if (numScore >=90 && numScore <=100)
                showGrade(numScore,'A');

                else if (numScore >=80 && numScore <=89)
                        showGrade(numScore,'B');

                else if (numScore >=70 && numScore <=79)
                        showGrade(numScore,'C');

                else if(numScore >=60 && numScore <=69)
                        showGrade(numScore,'D');

                else if (numScore >= 0 && numScore <= 59)
                        showGrade(numScore,'F');
                else
                      showGrade(numScore,'Z');

return(0);
}

void showGrade(int numScore, char letterGrade)
{
        if (letterGrade=='Z')
                printf("%d is not a valid number. Please enter a number between 0 and 100.\n", numScore);

else
                  printf("Your original numeric score of %d is a(n) %c grade.\n",numScore,letterGrade);
}

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storm:~/lab2>a.out
Please enter your numeric exam score and press return>
78
Your score of 78 is a C grade.

Quote:

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Got it to work!! Thanks for the help

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I do not beleive you. You ignoring the return value of getScore and convertScore functions and the not initialized variables

Quote:

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Originally Posted by vart

I do not beleive you. You ignoring the return value of getScore and convertScore functions and the not initialized variables

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Your completely right. Our lab assignment was to write the program normally and get it to function properly. Then we had to re-write it with functions. So when we ran it i accidentally ran the first version, the old working version without functions, but not the new version that included functions. I finally got it to work though. It was a simple fix having to do with the main function. Cant believe i spent 4 hours and didn't realize the problem.

And here it is for anyone interested in how it looks completed.

Code:

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/* Ryan Houlihan 
  Lab 2

  The purpose of this program is to use functions to convert a number between 0 and 100 to a
  letter grade of either A, B, C, D, or F.
*/

#include <stdio.h>

int getScore();                                        /*Declaring the first function */
char convertGrade(int numScore);                        /*Declaring the second function*/
void showGrade(int numScore, char letterGrade);        /*Declaring the third function*/
                       
int main()                                              /*Calls on the other 3 functions*/
{

        int numScore;
        int letterGrade;

        numScore = getScore();
       
        letterGrade = convertGrade(numScore);
               
        return (0);
}
       
int getScore()                                          /*Asks users to input a number*/
{
        int numScore;

        printf("Please enter your numeric exam score and press return> \n");
        scanf("%d",&numScore);
 
        return(numScore);
}
 
char convertGrade(int numScore)                        /*Converts inputed number into a letter*/
{
        if (numScore >=90 && numScore <=100)
                showGrade(numScore,'A');
                       
                else if (numScore >=80 && numScore <=89)
                        showGrade(numScore,'B');
       
                else if (numScore >=70 && numScore <=79)
                        showGrade(numScore,'C');

                else if(numScore >=60 && numScore <=69)
             
                else if (numScore >= 0 && numScore <= 59)
                        showGrade(numScore,'F');
 
                        else
                                showGrade(numScore,'Z');

        return(0);
}

void showGrade(int numScore, char letterGrade)          /*Prints out the letter coresponding to the inputed number*/
{
        if (letterGrade=='Z')
                printf("%d is not a valid number. Please enter a number between 0 and 100.\n", numScore);

                else
                        printf("Your original numeric score of %d is a(n) %c grade.\n",numScore,letterGrade);
}

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you should not call showGrade from convertGrade function

you are messing the main functionality and report functionality in this way.

return the caonverted grade to main

and call ShowGrade from main

Quote:

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Originally Posted by vart

you should not call showGrade from convertGrade function

you are messing the main functionality and report functionality in this way.

return the caonverted grade to main

and call ShowGrade from main

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Thanks for the advice. Ill be sure to change that.

Sorry. I answered to an old post here :/