Using File Handling concept in C programming, write the C programs for

Question

Using File Handling concept in C programming, write the C programs for the following:

(a) To find the number of lines in a text file.
(b) To delete specific line from a text file.
(c) To copy a file to another folder with a different file-name.

07 Aug 2023

Answer :

Word Count : 1150

Here are the C programs using File Handling concepts to perform the tasks you mentioned:

(a) To find the number of lines in a text file:

#include <stdio.h>

int main() {
FILE *file;
char filename[100];
char ch;
int lineCount = 0;

printf("Enter the name of the file: ");
scanf("%s", filename);

file = fopen(filename, "r");
if (file == NULL) {
printf("Unable to open the file.\n");
return 1;
}

while ((ch = fgetc(file)) != EOF) {
if (ch == '\n') {
lineCount++;
}
}

printf("Number of lines in the file: %d\n", lineCount + 1);

fclose(file);

return 0;
}

(b) To delete a specific line from a text file:

#include <stdio.h>

int main() {
FILE *sourceFile, *tempFile;
char sourceFilename[100], tempFilename[100];
char ch;
int lineNumber, currentLine = 1;

printf("Enter the name of the source file: ");
scanf("%s", sourceFilename);

printf("Enter the line number to delete: ");
scanf("%d", &lineNumber);

sourceFile = fopen(sourceFilename, "r");
if (sourceFile == NULL) {
printf("Unable to open the source file.\n");
return 1;
}

tempFile = fopen("temp.txt", "w");
if (tempFile == NULL) {
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