Back-End Programming Exam > Back-End Programming Videos > Learn to Program with C++: Beginner to Expert > C++ Programming Tutorials - Working with Files
C++ Programming Tutorials - Working with Files Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming
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73 videos|7 docs|23 tests
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FAQs on C++ Programming Tutorials - Working with Files Video Lecture - Learn to Program with C++: Beginner to Expert - Back-End Programming
| 1. What is file handling in C programming? |  |
Ans. File handling in C programming is the process of working with files, which allows reading from and writing to files. It involves creating, opening, closing, reading, and writing files in the C programming language.
| 2. How to open a file in C programming? | |
Ans. To open a file in C programming, you can use the fopen() function. The syntax to open a file is:
FILE *fptr;
fptr = fopen("filename", "mode");
Here, "filename" is the name of the file you want to open, and "mode" specifies the type of operation you want to perform on the file (e.g., "r" for reading, "w" for writing, "a" for appending).
| 3. How to read data from a file in C programming? | |
Ans. To read data from a file in C programming, you can use the fscanf() function. Here's an example:
FILE *fptr;
fptr = fopen("filename", "r");
if (fptr == NULL) {
printf("Error opening the file.");
exit(1);
}
int data;
while (fscanf(fptr, "%d", &data) == 1) {
printf("%d ", data);
}
fclose(fptr);
This code opens the file "filename" in read mode and reads integers from the file using fscanf(). It then prints the read data on the console.
| 4. How to write data to a file in C programming? | |
Ans. To write data to a file in C programming, you can use the fprintf() function. Here's an example:
FILE *fptr;
fptr = fopen("filename", "w");
if (fptr == NULL) {
printf("Error opening the file.");
exit(1);
}
int data = 10;
fprintf(fptr, "%d", data);
fclose(fptr);
This code opens the file "filename" in write mode and writes the integer value 10 to the file using fprintf().
| 5. How to close a file in C programming? | |
Ans. To close a file in C programming, you can use the fclose() function. Here's an example:
FILE *fptr;
fptr = fopen("filename", "r");
if (fptr == NULL) {
printf("Error opening the file.");
exit(1);
}
// Perform file operations...
fclose(fptr);
This code opens the file "filename" in read mode, performs some file operations, and then closes the file using fclose(). It is important to close the file after you finish working with it to free up system resources.
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Oct 24, 2024 Last updated |
Video Description: C++ Programming Tutorials - Working with Files for Back-End Programming 2024 is part of Learn to Program with C++: Beginner to Expert preparation.
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