Write the c program to create a file "input.txt". Open the file and read the content to count the number of lines.

Write the c program to create a file "input.txt". Open the file and read the content to count the number of lines.

Rule to implement the above problem:

The file name should be input.txt.

Input format:

Give the input as a file.

Output format:

The output will be the integer which is the number of lines in the file. Display the output in the console. 

Sample Input file (input.txt):

C was invented to write an operating system.

C is a successor of B language.

C is a Structured language.

It produces efficient programs.

It can handle low-level activities.

It can be compiled on a variety of computers.

Implementation of the above problem

#include <stdio.h>

#define MAX_FILE_NAME 100

int main()

{

FILE *fp;

int count = 0;  // Line counter (result)

char filename[MAX_FILE_NAME];

char c;  // To store a character read from file

// Open the file

fp = fopen("input.txt", "r");

// Check if file exists

if (fp == NULL)

{

printf("Could not open file %s", filename);

return 0;

}

// Extract characters from file and store in character c

for (c = getc(fp); c != EOF; c = getc(fp))

if (c == '\n') // Increment count if this character is newline

count = count + 1;

// Close the file

fclose(fp);

printf("The file has %d lines",count);

return 0;

}

Output:

The file has 6 lines

Thanks

Mukesh Rajput