/*File: ifgrade.c
Reads greades A, B, C, D ,F from the screen and prints the corresponding numerical value (4, 3, 2, 1, 0) of the score*/

#include <stdio.h>

int main()
{
    char grade;
    double score;
    printf("Enter a grade [A,B,C,D,F]: ");
    scanf(" %c",&grade);
    /*Make the character entered upper case if it is lower case*/
    if(grade >= 97)
    {
        grade = grade-32;
    }
    if(grade=='A')
    {
        score = 4.0;
    }
    else if(grade=='B')
    {
        score = 3.0;
    }
    else if(grade=='C')
    {
        score = 2.0;
    }
    else if(grade=='D')
    {
        score = 1.0;
    }
    else if(grade=='F')
    {
        score = 0.0;
    }
    else
    {
        score = -1;
        printf("Invalid grade %c\n",grade);
    }
    
    if(score != -1)
    printf("The score for the grade %c is %.2f\n",grade,score);
    return 0;
}