C# Interview questions for Automation Engineer

a)      Write the C# code to solve each problem.

b)     Use appropriate string manipulation methods and programming constructs to accomplish the given tasks.

c)      Test your code with different inputs to ensure correctness.

d)     Once you have completed the test, review your code for any improvements.

e)     Submit your code for evaluation.

Console Input/Output :

1.       Write a program to display welcome message to the user

2.      Write a program asking for the username and printing the user name along with welcome message

Data Types :

1.      Write a program that calculates the sum, difference, product, and quotient of two given numbers. Prompt the user to enter the numbers and display the results

2.      Write a program that prompts the user to enter a decimal number and rounds it to the nearest integer. Display the rounded value

3.      Write a program that prompts the user to enter a binary number and converts it to its decimal representation. Display the decimal equivalent.

4.      Write a program that prompts the user to enter their name and age. Display the entered values with appropriate labels.

String :

1.      Write a program that replaces all occurrences of a given word in a sentence with another word. Prompt the user to enter a sentence, the word to be replaced, and the replacement word. Display the modified sentence.

2.      For above problem count the number of Replacements and the total number of words in the sentence.

3.      Capitalizes the first letter of each word in the sentence

4.      Counts the number of vowels (a, e, i, o, u) in each string

5.      Write a program that prompts the user to enter a sentence and displays the sentence in uppercase.

 

Loops and Array :

1.      Write a program that prompts the user to enter five numbers and stores them in an array. Display the sum of the numbers.

2.      Write a program that counts the number of even and odd numbers in array of integers. Display the counts.

3.      Write a program that prompts the user to enter a sentence and splits it into an array of words. Display the number of words in the sentence.

4.      Write a program that multiplies each element in array of integers by a given factor. Prompt the user to enter the factor and display the modified array.

5.      Make a FIFO pipeline with actions like Push, Pop, Replace, Delete.

6.      Write a program to print the below format and reverse of it

*

**

***

****

Collections(List, Set, Maps) :

 

1.      Write a program that prompts the user to enter five names and stores them in a List<string>. Display the names in reverse order.

2.      Write a program that counts the frequency of each word in a given sentence using a Dictionary<string, int>. Prompt the user to enter a sentence and display the word frequency.

 

Exception handling(try/catch) :

 

1.      Write a program that prompts the user to enter two numbers and divides them. Handle the exception if the user enters an invalid number or attempts to divide by zero. Display an appropriate error message.

2.      Write a program that prompts the user to enter their age. Handle the exception if the user enters a negative value or a non-numeric input. Display an appropriate error message

3.      Write a program that prompts the user to enter their username and password. Handle the exception if the user enters an incorrect password three times consecutively. Display an appropriate error message.