EmSAT Achieve Exam > EmSAT Achieve Questions > What is the purpose of the getline() function...
Start Learning for Free
What is the purpose of the 'getline()' function in C++?
- a)It reads a line of text from the console.
- b)It converts a string to lowercase.
- c)It concatenates two strings.
- d)It searches for a substring within a string.
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
What is the purpose of the getline() function in C++?a)It reads a line...
Answer:
The getline() function in C is used to read a line of text from the console. It is a standard library function defined in the header file. The purpose of this function is to read a line of text, including spaces, from the user and store it in a character array or a string.
Working of getline() function:
1. The getline() function takes three arguments: the address of the character array where the input will be stored, the maximum number of characters to be read, and the file pointer from where the input is to be read.
2. It reads characters from the specified file pointer until it encounters a newline character or the maximum number of characters is read.
3. The newline character ('\n') is also read and stored in the character array.
4. The getline() function then appends a null character ('\0') at the end of the character array to mark the end of the string.
Example usage:
```c
#include
int main() {
char str[100]; // declare a character array to store the input
printf("Enter a line of text: ");
fflush(stdout); // flush the output buffer to display the prompt
fgets(str, sizeof(str), stdin); // use fgets() to read the line of text
printf("You entered: %s", str); // display the input
return 0;
}
```
Explanation:
In the above example, the getline() function is used to read a line of text from the user.
- The character array `str` is declared to store the input.
- The prompt "Enter a line of text: " is displayed using the printf() function.
- The fflush() function is used to flush the output buffer to ensure that the prompt is displayed before reading the input.
- The fgets() function is used to read the line of text from the user. The maximum number of characters to be read is specified as `sizeof(str)`, which ensures that the input does not exceed the size of the character array.
- Finally, the input is displayed using the printf() function.
This is how the getline() function is used to read a line of text from the console in C. It is a convenient way to handle input that includes spaces and newline characters.
The getline() function in C is used to read a line of text from the console. It is a standard library function defined in the header file
Working of getline() function:
1. The getline() function takes three arguments: the address of the character array where the input will be stored, the maximum number of characters to be read, and the file pointer from where the input is to be read.
2. It reads characters from the specified file pointer until it encounters a newline character or the maximum number of characters is read.
3. The newline character ('\n') is also read and stored in the character array.
4. The getline() function then appends a null character ('\0') at the end of the character array to mark the end of the string.
Example usage:
```c
#include
int main() {
char str[100]; // declare a character array to store the input
printf("Enter a line of text: ");
fflush(stdout); // flush the output buffer to display the prompt
fgets(str, sizeof(str), stdin); // use fgets() to read the line of text
printf("You entered: %s", str); // display the input
return 0;
}
```
Explanation:
In the above example, the getline() function is used to read a line of text from the user.
- The character array `str` is declared to store the input.
- The prompt "Enter a line of text: " is displayed using the printf() function.
- The fflush() function is used to flush the output buffer to ensure that the prompt is displayed before reading the input.
- The fgets() function is used to read the line of text from the user. The maximum number of characters to be read is specified as `sizeof(str)`, which ensures that the input does not exceed the size of the character array.
- Finally, the input is displayed using the printf() function.
This is how the getline() function is used to read a line of text from the console in C. It is a convenient way to handle input that includes spaces and newline characters.
Free Test
FREE
| Start Free Test |
Community Answer
What is the purpose of the getline() function in C++?a)It reads a line...
The 'getline()' function is used to read a line of text from the console.
Attention EmSAT Achieve Students!
To make sure you are not studying endlessly, EduRev has designed EmSAT Achieve study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in EmSAT Achieve.
|
Explore Courses for EmSAT Achieve exam
|
|
Top Courses for EmSAT AchieveView all
What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer?
Question Description
What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? for EmSAT Achieve 2024 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer?.
What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? for EmSAT Achieve 2024 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer?.
Solutions for What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for EmSAT Achieve.
Download more important topics, notes, lectures and mock test series for EmSAT Achieve Exam by signing up for free.
Here you can find the meaning of What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What is the purpose of the getline() function in C++?a)It reads a line of text from the console.b)It converts a string to lowercase.c)It concatenates two strings.d)It searches for a substring within a string.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice EmSAT Achieve tests.
|
|
Explore Courses for EmSAT Achieve exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup