Love Babbar's C++ DSA Lecture's Solutions

1. Lecture: 1 Homework Solutions
2. Lecture: 2 Homework Solutions
3. Lecture: 3 Homework Solutions
4. Lecture: 4 Homework Solutions
5. Lecture: 5 Homework Solutions
6. Lecture: 6 Homework Solutions
7. Lecture: 7 Homework Solutions

Homework of Video 4 ( Solving Pattern Questions (Part-2) ) - Love babbar

1. Write a program to print this pattern:

1

2 3

4 5 6

7 8 9 10

2. Write a program to print this pattern:

1

2 3

3 4 5

4 5 6 7

3. Write a program to print this pattern:

A B C

A B C

A B C

4. Write a program to print this pattern:

A B C

D E F

G H I

5. Write a program to print this pattern:

A B C

B C D

C D E

6. Write a program to print this triangular pattern:

A

B B

C C C

7. Write a program to print this triangular pattern:

D

C D

B C D

A B C D

8. Write a program to print this square matrix pattern:

****

***

**

*

9. Write a program to print this square matrix pattern:

****

***

**

*

10. Write a program to print this square matrix pattern:

1111

222

33

4

11. Write a program to print this square matrix pattern:

1

22

333

4444

12. Write a program to print this square matrix pattern:

1234

234

34

4

13. Write a program to print this square matrix pattern:

1

23

456

78910

14. Write a program to print this square matrix pattern:

1234554321

1234**4321

123****321

12******21

1********1

Homework of Video 3 ( If-Else, While loop & Lots of Patterns (Part-1) ) - Love babbar

1. Why do we write namespace std & iostream as the program's header?

Ans. These are pre-built libraries where a code related to performing a certain task is placed So that, C++ can work effectively.

a. Using namespace std: There are a bunch of namespaces & out of them we are using std that makes the computer know that we are using cout. Basically, an identifier conflict resolver.

b. #include <iostream> : This header contains the programs of input & output functions like cout,cin etc. #include asks to include iostream

2. Guess the output :

Ans: NINEYPOSITIVE

Ans: 3

Ans: Love24

3. Write a code that accepts char ch. 

• Prints this is the lowercase or small case if lies in between 'a' - 'z'
• Prints this is uppercase  if lies in between 'A' - 'Z'
• Prints this is numeric if lies in between '0' - '9'

4. Input N and print the sum of all the even numbers lying in 1 to N.

5.  Write a program to convert the temperature into:

• Fahrenheit to celsius
• Celsius to Fahrenheit

Homework of Video 1(Intro to Programming & Flowcharts)- Love babbar