Number have different representations depending on the bases on which they are expressed. For example in base 3, the number 12 is written as 110 , but in base 8 it is written as Consider, for example, the integers 12 and 5. Certainly these ar not equal if base 10 is used for each, but […]

# ISC Computer

## ISC Practical Program – Print the date ‘n’ days after a given date

The following program inputs a date and a number ‘n’ and print the date of the day n days after the given date. The program also checks whether the given date is a valid date or not.

## ISC Practical Program – To find the number of days between two dates.

The following program inputs two dates and prints the total number of days between them. The program also checks whether the two dates are valid or not.

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/* Write a program to input 2 dates and print the number of days between them also count the number of months and days between them. Example 1: Enter the day, month and year for the first date: 12 4 2014 Enter the day, month and year for the second date: 11 7 2018 Number of days: 1551 Example 2: Enter the day, month and year for the first date: 28 4 2016 Enter the day, month and year for the second date: 4 5 2016 Number of days: 6 */ import java.util.*; public class DateDays { int md[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; boolean isLeap(int y) { if(y%4==0&&y%100!=0||y%400==0)//Checking conditions for leap year return true; return false; } boolean isValid(int d, int m, int y) { if(d<1||m<1||y<0||m>12||d>31)//Checking invalid conditions return false; if((m==4||m==6||m==9||m==11)&&d>30) return false; if(m==2&&isLeap(y)&&d>29) return false; if(m==2&&!isLeap(y)&&d>28) return false; return true; /*If none of the above conditions are true then the Date is a valid date*/ } void days(int d1, int m1, int y1, int d2, int m2, int y2) { int m = m1, y = y1; if(isLeap(y1)) md[2] = 29; int s =0, sd = md[m1]-d1 + d2, i; m=m+1; if(m1==m2&&y1==y2) //When the month and year is same in both dates { s = d2 - d1; } else { do { if(m>12) { /*If the month is more than 12 then the month should be changed to 1 and the year increased by 1*/ m = 1; y++; } if(isLeap(y)) //If the current year is leap then the number md[2] = 29; //of days should be 29 else 28 else md[2] = 28; if(m==m2&&y==y2) break;/*If the counter month and year has reached the destination month and year then the loop should be terminated*/ s = s+md[m]; //Adding the number of days of the current month m++; //Incrementing the number of month by 1 }while(true); s = s+sd; /*Adding the remaining days from the first date and the days in the destination date*/ }//end of else System.out.println("Number of days: "+s); } public static void main() { Scanner sc = new Scanner(System.in); int d1,d2,m1,m2,y1,y2; System.out.println("Enter the day, month and year for the first date: "); d1 = sc.nextInt(); m1 = sc.nextInt(); y1 = sc.nextInt(); System.out.println("Enter the day, month and year for the second date: "); d2 = sc.nextInt(); m2 = sc.nextInt(); y2 = sc.nextInt(); DateDays ob = new DateDays(); if(ob.isValid(d1,m1,y1)&&ob.isValid(d2,m2,y2)) ob.days(d1,m1,y1,d2,m2,y2);//Calling the function else System.out.println("Invlaid input"); } } |

## Merging Arrays – ISC 2001

Write a program which input natural number N and M followed by integer arrays A[] and B[], each consisting of N and M number of elements respectively. Sort the arrays A[] and B[] in descending order of magnitude. Use the sorted arrays to generate a merged array C[]. Array C[] should be generated in descending […]

## Practical Questions ISC 2001

Consider the sequence of natural number:- 1, 2, 3, 4, 5, 6, 7……………………………… Removing every second number produces the sequence 1, 3, 7, 9, 11, 13, 15, 17………………………… Removing every third number from the above sequence produces the sequence 1, 3, 7, 9, 13, 15, 19, 25, 27……………………….. This process continues indefinitely by removing the […]

## ISC Specimen Papers 2015 – 2017

Specimen Papers Year 2015 Accounts Biology Paper 1 Biology Paper 2 – I Biology Paper 2 – II Chemistry Paper 1 Chemistry Paper 1 Chemistry Paper 2 – I Chemistry Paper 2 – II Chemistry Paper 2 – III Chemistry Paper 2 – IV Chemistry Paper 2 – V Elective English Geography Literature in English […]