Question

Write a C program which is called ‘multiple_copy’. This program copies one source file to two destination files as follows:

$./multiple_copy....... source_file....... destination_file1......... destination_file2

1. multiple_copy program copies the contents of source file (i.e., source_file) to any named two destination files in the command line.

2. The number of arguments should be 4 including multiple_copy. If the number of arguments is not 4, the program should display error message saying:

   “Usage: multiple_copy source_file destination_file1 destination_file2”.

3. When the source_file does not exist, the program should display error

   message with source file name, for example, “Opening Error!: source_file”.

4. If the destination file exists, existing content of that file should be truncated

   (removed).

Answer 1

Hi, Please find the program.

//

// main.c

// CopySourceTo 2 dest Files

//

// Created by Abhirama Gopala Dasa on 16/09/19.

// Copyright © 2019 Abhirama Gopala Dasa. All rights reserved.

//

#include <stdio.h>

int main(int argc, const char * argv[]) {

for (int i=0; i<argc; i++) {

printf("%s\n",argv[i]);

}

  

if(argc!=4){

printf("Please input sourceFile,and 2 destination files\n");

return 0;

}

FILE *source;

FILE *dest1,*dest2;

char data[100];

printf("%s",argv[1]);

source = fopen(argv[1], "r");

dest1 = fopen(argv[2], "w");

dest2 = fopen(argv[3], "w");

if(source==NULL){

printf("Failed to open file");

return 0;

}

while(fgets(data,100,source)!=NULL){

printf("%s",data);

  

fputs(data, dest1);

// fputs("\n", dest1);

  

fputs(data,dest2);

// fputs("\n", dest2);

}

  

fclose(dest1);

fclose(dest2);

printf("\nCopyDone\n");

}

Please make sure the file paths do not contain spaces. thanks. copying is working perfect.