Consider the following C program that manipulates newly created file named foo.txt. Write the contents of foo.txt after its execution. int main(int argc, char *argv[]) {close(STDOUT_FILENO); int f = open("foo.txt", O_CREATIO_WRONLY|O_TRUNC, S_IRWXU); assert (f >= 0); int rt = fork(); if (rt == 0) {write(f, "Child here!\n", 20); printf("Child terminates.\n"); } else if (rt > 0) { (void) wait(NULL); write(f, "Parent here!\n", 21); printf("Parent terminates.\n"); } return 0; }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Consider the following C program that manipulates newly created file named foo.txt. Write the
contents of foo.txt after its execution.
int main(int argc, char *argv[])
{close(STDOUT_FILENO);
int f = open("foo.txt", O_CREATIO_WRONLY|O_TRUNC, S_IRWXU);
assert (f >= 0);
int rt = fork();
if (rt == 0)
{write(f, "Child here!\n", 20); printf("Child terminates.\n");
}
else if (rt > 0)
{
(void) wait(NULL); write(f, "Parent here!\n", 21);
printf("Parent terminates.\n");
}
return 0;
}
Transcribed Image Text:Consider the following C program that manipulates newly created file named foo.txt. Write the contents of foo.txt after its execution. int main(int argc, char *argv[]) {close(STDOUT_FILENO); int f = open("foo.txt", O_CREATIO_WRONLY|O_TRUNC, S_IRWXU); assert (f >= 0); int rt = fork(); if (rt == 0) {write(f, "Child here!\n", 20); printf("Child terminates.\n"); } else if (rt > 0) { (void) wait(NULL); write(f, "Parent here!\n", 21); printf("Parent terminates.\n"); } return 0; }
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