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I need a help to understand fork() and exec() why this code below returns 64? if (pid=fork() && pid2 = fork()) {fork();} if (pid=fork() &&

I need a help to understand fork() and exec()

why this code below returns 64?

if (pid=fork() && pid2 = fork()) {fork();}

if (pid=fork() && pid2 = fork()) {fork();}

if (pid=fork() && pid2 = fork()) {fork();}

why this code below returns 27?

if (pid=fork()) {fork();}

if (pid=fork()) {fork();}

if (pid=fork()) {fork();}

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