You want to extract the first word from a sentence stored in string sentence. Which code correctly extracts the first word assuming words are separated by spaces?

hard🚀 Application Q15 of 15

C Sharp (C#) - Strings and StringBuilder

You want to extract the first word from a sentence stored in string sentence. Which code correctly extracts the first word assuming words are separated by spaces?

Astring firstWord = sentence.Substring(sentence.IndexOf(' ') + 1);

Bstring firstWord = sentence.Substring(0, sentence.IndexOf(' '));

Cint spacePos = sentence.IndexOf(' '); string firstWord = sentence.Substring(spacePos);

Dint spacePos = sentence.IndexOf(' '); string firstWord = spacePos == -1 ? sentence : sentence.Substring(0, spacePos);

Step-by-Step Solution

Solution:

Step 1: Find position of first space
Use IndexOf(' ') to find where the first space is.
Step 2: Extract substring from start to space or whole string if no space
If no space found (-1), the whole sentence is one word; else extract from 0 to space position.
Final Answer:
int spacePos = sentence.IndexOf(' '); string firstWord = spacePos == -1 ? sentence : sentence.Substring(0, spacePos); -> Option D
Quick Check:
Check for space, then substring from start [OK]

Quick Trick: Check if space exists before substring to avoid errors [OK]

Common Mistakes:

MISTAKES

Not handling case when no space exists
Extracting substring after space instead of before
Using wrong substring parameters

Master "Strings and StringBuilder" in C Sharp (C#)

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions

More C Sharp (C#) Quizzes

You want to extract the first word from a sentence stored in string sentence. Which code correctly extracts the first word assuming words are separated by spaces?

Step 1: Find position of first space

Step 2: Extract substring from start to space or whole string if no space

Final Answer:

Quick Check:

Want More Practice?