C Program to count the number of lines in a file?
In this program, we are going to learn how to find the total number of lines available in a text file using C program?
This program will open a file and read the file’s content character by character and finally return the total number of lines in the file. To count the number of lines we will check the available Newline (\n) characters.
Input:
File "test.text"
Hello friends, how are you?
This is a sample file to get line numbers from the file.
Output:
Total number of lines are: 2
Explanation
This program will open a file and read the file’s content character by character and finally return the total number of lines in the file. To count the number of lines we will check the available Newline (\n) characters. This will check all the new line and count then and return the count.
Example
#include<iostream>
using namespace std;
#define FILENAME "test.txt"
int main() {
FILE *fp;
char ch;
int linesCount=0;
//open file in read more
fp=fopen(FILENAME,"r");
if(fp==NULL) {
printf("File \"%s\" does not exist!!!\n",FILENAME);
return -1;
}
//read character by character and check for new line
while((ch=fgetc(fp))!=EOF) {
if(ch=='\n')
linesCount++;
}
//close the file
fclose(fp);
//print number of lines
printf("Total number of lines are: %d\n",linesCount);
return 0;
}
Published on 20-Aug-2019 12:19:43
