Reference no: EM133269757

Write a C program to produce a parentfchild relationship. The program should require the user to enter a string of at least 30 and maximum 50 characters. The child process checks whether the strings contains the word "secret". If it does the child will write the content into a hidden file, and communicate 1 via pipe to the parent process. otherwise it will write the content into file, and communicate 0 via pipe to the parent process. The parent creates a second child process, which changes the permission of the file, as follows: If the parent received 1 from the first child, the second child will make the hidden file onlyr readible and writable for the owner, otherwise the file should be readable and writable from evervone.