get file ligne count c
To get the line count of a file in C, you can follow the steps below:
- Include the required header files: Begin by including the necessary header files for file handling and input/output operations. In this case, you need to include the
<stdio.h>header file.
c
#include <stdio.h>
- Declare the variables: Declare the variables needed to handle the file and count the lines. You'll need a
FILEpointer to point to the file and anintvariable to store the line count.
c
FILE *filePointer;
int lineCount = 0;
- Open the file: Use the
fopen()function to open the file in read mode. This function takes two parameters: the name of the file and the mode in which to open it. In this case, you want to open the file in read mode, so you'll use"r"as the mode.
c
filePointer = fopen("filename.txt", "r");
- Check if the file was opened successfully: After opening the file, check if it was opened successfully. If the file pointer is
NULL, it means the file could not be opened.
c
if (filePointer == NULL) {
printf("Failed to open the file.");
return 0;
}
- Count the lines: To count the lines, you can use a loop that reads the file character by character until it reaches the end. Inside the loop, check for newline characters (
'\n') to increment the line count.
c
char ch;
while ((ch = fgetc(filePointer)) != EOF) {
if (ch == '\n') {
lineCount++;
}
}
- Close the file: After counting the lines, close the file using the
fclose()function to free up system resources.
c
fclose(filePointer);
- Print the line count: Finally, print the line count to the console.
c
printf("Line count: %d", lineCount);
That's it! Following these steps will allow you to get the line count of a file in C. Remember to replace "filename.txt" with the actual name of the file you want to count the lines for.