C++
Loop based questions
Write a program in C++ to display the first n terms of Fibonacci series.
Sample Output:
Input number of terms to display: 10
Here is the Fibonacci series upto to 10 terms:
0 1 1 2 3 5 8 13 21 34
Solution
Write a program in C++ to display the cube of the number upto given an integer.
Sample Output:
Input the number of terms : 5
Number is : 1 and the cube of 1 is: 1
Number is : 2 and the cube of 2 is: 8
Number is : 3 and the cube of 3 is: 27
Number is : 4 and the cube of 4 is: 64
Number is : 5 and the cube of 5 is: 125
Solution
Write a program in C++ to list non-prime numbers from 1 to an upperbound.
Sample Output:
Input the upperlimit: 25
The non-prime numbers are:
4 6 8 9 10 12 14 15 16 18 20 21 22 24 25
Solution
Write a program in C++ to calculate the series (1) + (1+2) + (1+2+3) + (1+2+3+4) + ... + (1+2+3+4+...+n).
Sample Output:
Input the value for nth term: 5
1 = 1
1+2 = 3
1+2+3 = 6
1+2+3+4 = 10
1+2+3+4+5 = 15
The sum of the above series is: 35
Solution
Write a program in C++ to find the sum of the series 1 + 1/2^2 + 1/3^3 + ..+ 1/n^n.
Sample Output:
Input the value for nth term: 5
1/1^1 = 1
1/2^2 = 0.25
1/3^3 = 0.037037
1/4^4 = 0.00390625
1/5^5 = 0.00032
The sum of the above series is: 1.29126
Solution
Write a program in C++ to find the sum of digits of a given number.
Sample Output:
Input a number: 1234
The sum of digits of 1234 is: 10
Solution
Write a program in C++ to find the Greatest Common Divisor (GCD) of two numbers.
Sample Output:
Input the first number: 25
Input the second number: 15
The Greatest Common Divisor is: 5
Solution
Write a program in C++ to find prime number within a range.
Input number for starting range: 1
Input number for ending range: 100
The prime numbers between 1 and 100 are:
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
The total number of prime numbers between 1 to 100 is: 25
Solution
Write a program in C++ to check whether a number is prime or not.
Sample Output:
Input a number to check prime or not: 13
The entered number is a prime number.
Solution
Write a program in C++ to find the perfect numbers between 1 and 500.
The perfect numbers between 1 to 500 are:
6
28
496
Solution
Write a program in C++ to display n terms of natural number and their sum.
Sample Output:
Input a number of terms: 7
The natural numbers upto 7th terms are:
1 2 3 4 5 6 7
The sum of the natural numbers is: 28
Solution