1) What do the below programs do? Comment on child and parent process. // program 1 int counter =1; int main() //program 2 int main() { privtf("p"); fflush(stdout); if (fork() == 0) { privtf("q"); fflush(stdout); } else { if (fork() != 0) { wait(NULL); counter--; printf("counter = %d\n", counter);} else { printf("r"); fflush(stdout); wait(NULL); } } counter+±; printf("counter = %d\n", counter);} } //program 3 int main() { int i; for (i= 0; i < 3; i++) { if (fork() == 0) { printf("Child sees i = %d\n", i); exit(0); } else { printf("Parent sees i = %d\n", i); wait(NULL); }
1) What do the below programs do? Comment on child and parent process. // program 1 int counter =1; int main() //program 2 int main() { privtf("p"); fflush(stdout); if (fork() == 0) { privtf("q"); fflush(stdout); } else { if (fork() != 0) { wait(NULL); counter--; printf("counter = %d\n", counter);} else { printf("r"); fflush(stdout); wait(NULL); } } counter+±; printf("counter = %d\n", counter);} } //program 3 int main() { int i; for (i= 0; i < 3; i++) { if (fork() == 0) { printf("Child sees i = %d\n", i); exit(0); } else { printf("Parent sees i = %d\n", i); wait(NULL); }
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
Section: Chapter Questions
Problem 1PE
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