/*File: switchgrade.c 
This program reads a grade from the screen and prints the corresponding numerical value of the score.*/

#include <stdio.h>

int main()
{
    char grade;
    double score;
    
    printf("Enter a grade [A,B,C,D,F]: ");
    scanf(" %c",&grade);
    
    //Force all characters to be uppercase
    if(grade>=97)
    {
        grade = grade-32;
    }
    
    switch(grade)
    {
        case 'A':
            score += 1.0;
        case 'B':
            score += 1.0;
        case 'C':
            score += 1.0;
        case 'D':
            score += 1.0;
        case 'F':
            break;
        default:
            score = -1;
            printf("Invalid grade %c\n",grade);
            break;
     }
     if(score != -1)
     {
        printf("The score for the grade %c is %.2f\n",grade,score);
     }
     return 0;
}