Having problem in taking an input of a character value if - else program

Question

here is my code. the question is- write a code to check weather a student is eligible to sit in the exam based on his/her attendance percentage. If the student has attendance percentage more than 75, he is eligible to sit in the exam otherwise, he/she will be asked weather he/she has a medical condition. if yes, he will be allowed otherwise not. Please help me out. I am unable to give input during if statement.

    int main()
    {
    char response;
    int clshld,per;
    int clsatnd;

    clshld = 330;   //total no of class held
    printf("no of class attended\n");
    scanf ("%d", &clsatnd);
    per=(clsatnd*100)/clshld;    //percentage formula
    printf ("\nattendence percentage is %d", per);

    if (per<75)
    {
        printf ("\ndo you have  a medical condition??");
        scanf ("%c", &response);
        if (response =='y')
        {
            printf ("\nyou can sit in the exam");
        }

        else 
        {
            printf ("\nattendence too low ! you can't sit in the exam.'");
        }
    }
    else
    {
        printf ("\nyou are eligible to sit in the exam.");
    }
    return 0;
    }

Does this answer your question? [scanf() leaves the new line char in the buffer](https://stackoverflow.com/questions/5240789/scanf-leaves-the-new-line-char-in-the-buffer) — Alex Lop., Jun 16 '20 at 10:51

ZZZDamon · Answer 1 · 2020-06-16T11:20:59.313

0

Try this :

#include<stdio.h>

int main()
{
    char response;
    int clshld,per;
    int clsatnd, trash;

    clshld = 330;   //total no of class held
    printf("no of class attended\n");
    scanf ("%d", &clsatnd);
    scanf("%c", &trash);
    per=(clsatnd*100)/clshld;    //percentage formula
    printf ("\nattendence percentage is %d", per);

    if (per<75)
    {
        printf ("\ndo you have  a medical condition?? ");
        scanf ("%c", &response);

        if (response =='y')
        {
            printf ("\nyou can sit in the exam");
        }

        else
        {
            printf ("\nattendence too low ! you can't sit in the exam.'");
        }
    }

    else
    {
        printf ("\nyou are eligible to sit in the exam.");
    }

    return 0;
}

edited Jun 16 '20 at 11:20

answered Jun 16 '20 at 11:11

ZZZDamon

34
8

Is there a list with known bugs you can share? – ZZZDamon Jun 16 '20 at 11:22
I mean , what can 'fflush(stdin)' cause? – ZZZDamon Jun 16 '20 at 11:57
ThankYou sir. Would you explain why did you add a character variable in integer string?? – HIMANSHU RANJAN Jun 16 '20 at 14:31
Because using scanf("%c", &trash); , you remove the \n from stdin and the flow of the program continue as expected – ZZZDamon Jun 16 '20 at 17:29

Having problem in taking an input of a character value if - else program

1 Answers1