A book has 20 chapters and every chapter has 30 pages each, write a program to accept a page number and display the chapter number.
Input 45
Output 2
Input 90
Output 3
Input 600
Output 20
Input 610
Output -1
Code:
#include<stdio.h>
#include<math.h>
int main(){
float z,a,n;
scanf("%f",&n);
z=n/20;
if(n<=30) printf("%.f",floor(z));
else if (n>600) printf("-1");
else printf("%.f",ceil(z));
return 0;
}
Code language: C/AL (cal)