library fine - c program

language:  this is a C program
software used : code blocks
short name : library fine

topic:
A library charges fine for every book returned late. For the first 5 days the fine is 50 paise(0.50 rupee) per day,for 6-10 days fine is one rupee per day and above 10 days fine is 5 rupees per day. If you returned the book after 30 days your membership will be canceled. Write a program to accept the number of days the member is late to return the book and display the fine or the appropriate message.


solution :


#include<stdio.h>

void main()
{
    int days;
    float fine;

    printf("enter the number of late days : ");
    scanf("%d",&days);

    if(days<=30)
    {
        if(days<=30&&days>10)
            fine=7.5+((days-10)*5);
        else if(days<=10&&days>5)
            fine=2.5+((days-5)*1);
        else if(days<6&&days>0)
            fine=days*0.5;
        printf("fine=  %.2f\n\n",fine);

    }
    else printf("your membership is canceled\n\n");

}

the output :











N:B -   you can also use #include<conio.h>, clrscr( ); and getch( ); if you use 'turbo c'  or some old software.As i used codeblocks it was not needed.