Write a Program to find the sum of all even numbers from 1 to N where the value of N is taken as input. [For example when N is 10 then the sum is 2+4+6+8+10 = 30]
Program :
#include <stdio.h>
void main()
{
int N, sum=0;
scanf("%d", &N);
int i;
for (i = 1; i <= N; i++)
{
if (i % 2 == 0)
sum = sum + i;
}
printf("Sum = %d", sum);
}
| Input | Output | |
| Test Case 1 | 10 | Sum = 30 |
| Test Case 2 | 15 | Sum = 56 |
Write a program to find the factorial of a given number using while loop.
Program :
#include<stdio.h>
void main()
{
int n;
long int fact;
scanf("%d",&n);
int i=1;
fact = 1;
while(i<=n)
{
fact*=i;
i++;
}
printf("The Factorial of %d is : %ld",n,fact);
}
| Input | Output | |
| Test Case 1 | 5 | The Factorial of 5 is : 120 |
| Test Case 2 | 10 | The Factorial of 10 is : 3628800 |
The length of three sides are taken as input. Write a C program to find whether a triangle can be formed or not. If not display “This Triangle is NOT possible.” If the triangle can be formed then check whether the triangle formed is equilateral, isosceles, scalene or a right-angled triangle. (If it is a right-angled triangle then only print Right-angle triangle do not print it as Scalene Triangle).
Program :
#include<stdio.h>
int main()
{
int a,b,c;
scanf("%d %d %d",&a, &b, &c);
if(a<(b+c)&&b<(a+c)&&c<(a+b))
{
if(a==b&&a==c&&b==c)
printf("Equilateral Triangle");
else if(a==b||a==c||b==c)
printf("Isosceles Triangle");
else
if((a*a)==(b*b)+(c*c)||(b*b)==(a*a)+(c*c)||(c*c)==(a*a)+(b*b))
printf("Right-angle Triangle");
else if(a!=b&&a!=c&&b!=c)
printf("Scalene Triangle");
}
else
printf("Triangle is not possible");
}
| Input | Output | |
| Test Case 1 | 9 9 9 | Equilateral Triangle |
| Test Case 2 | 5 12 13 | Right-angle Triangle |
Program :
#include <stdio.h>
int main()
{
int n1, n2, n3;
scanf("%d %d %d", &n1, &n2, &n3);
if (n1<n2)
{
if(n1<n3)
printf("%d is the smallest number.", n1);
else
printf("%d is the smallest number.", n3);
}
else
{
if(n2<n3)
printf("%d is the smallest number.", n2);
else
printf("%d is the smallest number.", n3);
}
}
| Input | Output | |
| Test Case 1 | 80 40 90 | 40 is the smallest number. |
| Test Case 2 | 77 88 -99 | -99 is the smallest number. |
Complete the code segment to debug / complete the program which is intended to print 'NPTEL JAVA'.
Program:-
public class Question215{
public static void main(String[] args) {
//Declare variable with name 'nptel', 'space' and 'java' and proper datatype
String nptel, space, java;
//Initialize the variables with proper input
nptel = "NPTEL";
space = " ";
java = "JAVA";
System.out.print(nptel+space+java);
}
}
| Input | Output | |
| Test Case 1 | NPTEL JAVA |
Complete the code segment to call default constructor first and then any other constructor in the class.
Program :-
// This is the main class Question
public class Question214{
public static void main(String[] args){
Answer a = new Answer(10,"MCQ");
}
}
class Answer{
// This is the default constructor of the class Answer
Answer(){
System.out.println("You got nothing.");
}
// This is a parameterized constructor of the class Answer
Answer(int marks, String type){
//The 'this()' referene variable is able to call the default constructor of the class.
this();
//Print marks and type of the question
System.out.print("You got "+marks+" for an "+ type);
}
}
| Input | Output | |
| Test Case 1 | You got nothing. You got 10 for an MCQ |
Complete the code segment to call print() method of class Question by creating a method named ‘studentMethod()’.
Program:-
// This is the main class Question
public class Question23{
public static void main(String[] args) {
// Object of the main class is created
Question23 q = new Question23();
// Print method on object of Question class is called
q.studentMethod();
}
// 'print()' method is defined in class Question
void print(Question23 object){
System.out.print("Well Done!");
}
// 'studentMethod()' method is defined in class Question23
void studentMethod(){
// Calling a method named 'print()' in class Question23
print(this);
}
}
| Input | Output | |
| Test Case 1 | Well Done! |
Complete the code segment to call the method print() of class given class Printer to print the following.
| Input | Output | |
| Test Case 1 | Hi! I am class STUDENT Hi! I class SCHOOL. |
Complete the code segment to call the method print() of class Student first and then call print() method of class School.
// This is the class named School
class School {
// This is a method in class School
public void print() {
System.out.println("Hi! I class SCHOOL.");
}
}
// This is the class named Student
class Student {
// This is a method in class Student
public void print() {
System.out.println("Hi! I am class STUDENT");
}
}
public class Question21{
public static void main(String args[]){
// Creating object of class Student
Student student = new Student();
// Creating object of class School
School school = new School();
// Call 'print()' method of class Student
student.print();
// Call 'print()' method of class School
school.print();
}
}
| Input | Output | |
| Test Case 1 | Hi! I am class STUDENT Hi! I class SCHOOL. |
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