1. Write a C++ program to check two numbers are equal or not.
Solution:
Output – 1:
Enter 2 numbers: 12 12
Numbers are equal
Output – 2:
Enter 2 numbers: 23 45
Numbers are not equal
2. Write a program to find the greater number among two numbers.
Solution:
OR
Output:
Enter 2 numbers: 23 56
Greater number is: 56
3. Write a program to check whether a number is even or odd.
Solution:
Output – 1:
Enter a number: 4
4 is even number
Output – 2:
Enter a number: 7
7 is odd number
4. Write a program to check whether a year is leap year or not.
Solution:
Output – 1:
Enter a year: 2020
2020 is leap year
Output – 1:
Enter a year: 2025
2025 is not leap year
5. Write a C++ program to find the largest number among three numbers.
Solution:
Output:
Enter 3 numbers: 10 20 30
Largest number is: 30
6. Write a C++ program to check whether a character is vowel or not using switch case.
Solution:
Output – 1:
Enter any character: A
A is a vowel
Output – 2:
Enter any character: r
r is not a vowel
7. Write a program in C++ to display the name of the day in a week.
Solution:
Output – 1:
Enter a number between 1 to 7: 5
Thursday
Output – 2:
Enter a number between 1 to 7: 10
Invalid Number
8. Write a C++ program to make a simple calculator to add, subtract, multiply and divide using switch case.
Solution:
Output – 1:
Enter 2 number: 10 20
Enter an operator (+, -, *, /): *
Result: 200
Output – 2:
Enter 2 number: 10 20
Enter an operator (+, -, *, /): ?
Error! Invalid Operator
OR
Output – 1:
Enter two numbers: 10 20
Enter an operator (+, -, *, /) : *
10*20=200
Output – 2:
Enter two numbers: 12 23
Enter an operator (+, -, *, /) : ?
Error! operator is not correct
9. Write a C++ program to print 1st 100 natural numbers.
OR
Write a program in C++ to print the number from 1 to 100.
Solution:
Output:
First 100 Natural Number:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
10. Write a C++ program to generate Multiplication Table.
OR
Write a C++ program to find the multiplication table of a number using for loop.
Solution:
Output:
Enter a number: 5
Multiplication Table of 5
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
5 x 10 = 50
11. Write a C++ program to print multiplication table from 1 to 5.
Solution:
Output:
Multiplication Table from 1 to 5
1 x 1 = 1
1 x 2 = 2
1 x 3 = 3
1 x 4 = 4
1 x 5 = 5
1 x 6 = 6
1 x 7 = 7
1 x 8 = 8
1 x 9 = 9
1 x 10 = 10
————-
2 x 1 = 2
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
2 x 10 = 20
————-
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
————–
————-
12. Write a program to calculate sum of first n natural numbers.
Solution:
Output:
Enter a number: 6
Sum of first 6 natural number:21
13. Write a program to calculate the factorial of a number.
Solution:
Output:
Enter a number: 5
Factorial of 5 = 120
14. Write a program in C++ to print the following series:
1+1/2+1/3+1/4…….+1/n
Solution:
Note: In C++, std::setprecision is an I/O stream manipulator used to control the number of digits displayed for floating-point values.It is defined within the <iomanip> header file and changes the visual presentation without altering the actual value stored in memory.
Output:
Enter the value of n: 4
Sum =2.08333
15. Write a C++ program to display Fibonacci Series.
Solution:
Output:
Enter the number of terms: 10
Fibonacci Series: 0 1 1 2 3 5 8 13 21 34
16. Write a C++ program to print the following pattern:
Solution:
17. Write a C++ program to display the following pattern:
Solution:
18. Write a program in C++ to print the following pattern:
Solution:
19. Write a program in C++ to print the following pattern:
Solution:
20. Write a program in C++ to display the following pattern:
Solution:
21. Write a C++ program to display the following pattern:
Solution:
22. Write a C++ program to print the reverse of a given number.
OR
Write a program in C++ to reverse digits of an integer.
Solution:
Output:
Enter any number to reverse: 123
Reverse = 321
23. Write a C program to calculate the sum of a 3-digit number.
OR
Write a C program to find the sum of a given integer.
OR
Write a C program to find the sum of digits in a given number
Solution:
Output:
Enter a number: 456
Sum of digits = 15
24. Write a program to print elements of a one-dimensional (1D) array.
Solution:
OR
Output:
Array elements are: 3 4 2 6
25. Write a program to print elements of a one-dimensional (1D) array taking input from user.
Solution:
Output:
Enter 5 array elements: 2 5 8 1 4
Array elements are: 2 5 8 1 4
26. Write a program to print sum and average of array elements.
Solution:
Output:
Enter 5 elements in the array: 1 2 3 4 5
The array elements are: 1 2 3 4 5
Sum = 15
Average = 3
27. Write a program to calculate total and average marks of 5 subjects.
Solution:
Output:
Enter Marks of subject 1= 50
Enter Marks of subject 2= 70
Enter Marks of subject 3= 78
Enter Marks of subject 4= 89
Enter Marks of subject 5= 95
Total Marks: 382
Average Mark: 76.4
28. Write a program to find the biggest number in an array.
OR
Write a program in C++ to find the largest element of an array.
Solution:
Output:
Enter size of the array:5
Enter 5 elements: 2 8 5 7 3
Biggest no. of array: 8
29. Write a program in C++ to display the largest and smallest element in an integer array.
OR
Write a C++ program to find maximum and minimum element in array.
Solution:
Output:
Enter size of the array: 6
Enter 6 elements: 8 6 7 9 4 2
Largest element: 9
Smallest element: 2
30. Write a C++ program that counts the number of times each vowel has been entered in a line of text. Plot in the form of a horizontal histogram.
Solution:
Output-1:
Enter a string: EDUCATION
A #
E #
I #
O #
U #
Output-2:
Enter a string: My Name is Eliza
A ##
E ##
I ##
O
U
31. Write a program to print elements of a two-dimensional (2D) array.
Solution:
Output:
The array elements are:
1 2 5
3 4 1
32. Write a program to read and print elements of a two-dimensional (2D) array.
Solution:
Output:
Enter 12 elements in the array:
2 3 4 1 5 6 7 9 8 2 4 6
The array elements are:
2 3 4
1 5 6
7 9 8
2 4 6
33. Write a C++ program to find maximum and minimum element in a two-dimensional (2D) array.
Solution:
Output:
Enter number of rows and columns:2 3
Enter elements in the array:2 1 5 3 4 6
Maximum element:6
Minimum element:1
34. Write a C++ program to add two matrices.
Solution:
Output:
Enter elements of 1st matrix:
1 2 3
4 5 6
Enter elements of 2nd matrix:
7 8 9
1 2 3
Sum of 2 matrix is:
8 10 12
5 7 9
OR
Output:
Enter number of rows and columns:2 2
Enter values of 1st matrix:
2 6
4 7
Enter values of 2nd matrix:
1 3
2 5
Sum of two matrix is:
3 9
6 12
35. Write a C++ program to find the difference between two matrices.
OR
Write a C++ program to subtract two matrices.
Solution:
Output:
Enter elements of 1st matrix:
7 8 9
4 5 6
Enter elements of 2nd matrix:
5 4 6
1 3 2
Difference of 2 matrix is:
2 4 3
3 2 4
OR
Output:
Enter number of rows and columns:3 3
Enter elements of 1st matrix:
5 4 8
3 6 2
9 5 7
Enter elements of 2nd matrix:
3 2 5
1 4 2
4 3 5
Difference of 2 matrix is:
2 2 3
2 2 0
5 2 2
36. Write a C++ program to multiply two matrices.
Solution:
Output:
Enter elements of 1st matrix:
1 3 2
2 1 4
Enter elements of 2nd matrix:
2 2
1 3
4 3
Product of 2 matrix is:
13 17
21 19
OR
Output:
Enter number of rows and columns:2 2
Enter elements of 1st matrix:
3 4
2 5
Enter elements of 2nd matrix:
1 4
2 3
Product of 2 matrix is:
11 24
12 23
OR
Output -1:
Enter number of rows and columns of 1st matrix:2 2
Enter number of rows and columns of 2nd matrix:2 2
Enter elements of 1st matrix:
1 2
3 4
Enter elements of 2nd matrix:
4 3
2 1
Product of 2 matrix is:
8 5
20 13
Output -2:
Enter number of rows and columns of 1st matrix:1 3
Enter number of rows and columns of 2nd matrix:2 3
Matices cannot be multiplied.
37. Write a C++ program to store information of Student using structure.
Solution:
Output:
Student Information:
———————-
Name:Ankit Das
Roll Number:1
GPA:9.7
Grade:A
OR
Output:
Enter information of student:
——————————
Enter name: Ankit Das
Enter roll number: 1
Enter GPA: 9.7
Enter grade: A
Student Information:
—————————-
Name:Ankit Das
Roll Number:1
GPA:9.7
Grade:A
38. Write a program in C++ to display information of employees using structure.
Solution:
Note: In C++, std::cin.ignore() used to discard or skip characters currently sitting inside the input buffer. It is most frequently used to fix input bugs where the program skips a std::getline() call right after a standard std::cin>> operation.
Output:
Enter the details of 3 employees:
Employee:1
Enter name: Raja Gogoi
Enter age: 25
Enter salary: 20000
Employee:2
Enter name: Nilom sharma
Enter age: 35
Enter salary: 30000
Employee:3
Enter name: Richa Das
Enter age: 25
Enter salary: 20000
Displaying Employee Information
Employee: 1
Name: Raja Gogoi
Age: 25
Salary: 20000
Employee: 2
Name: Nilom sharma
Age: 35
Salary: 30000
Employee: 3
Name: Richa Das
Age: 25
Salary: 20000
39. Write a C++ program to input any two numbers(integer) from the user and find the sum of the given numbers using function.
Solution:
Output:
Enter 2 numbers: 100 200
Sum of numbers is 300
40. Write a C++ program to input any number from the user and find the cube of the number using function.
Solution:
Output:
Enter a number: 5
Cube of the number is 125
41. Write a C++ program to input the radius of a circle from the user and find the diameter, circumference and area of the circle using function. Use Pi=3.142 in calculation.
Solution:
Output:
Enter radius of circle: 8
Diameter of the circle is 16
Circumference of the circle is 50.272
Area of the circle is 201.088
42. Write a program in C++ to calculate and return the area of a rectangle and area of a square using Function Overloading.
Solution:
Output:
Area of rectangle: 72
Area of square: 64
43. Write a program in C++ to calculate factorial using recursion.
Solution:
Output:
Enter a number: 5
Factorial of 5 = 120
44. Write a C++ program for print address of variable using Pointer.
Solution:
Output:
Value of num: 10
Address of num: 0x70fe34
Address of num: 0x70fe34
New value of num: 100
45. Write a program in C++ to add two numbers using Pointer.
Solution:
Output:
Enter 2 numbers: 5 8
Sum of 2 numbers is: 13