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Problem with execution of fork system call if i use \n
Post 302483188 by pnirmala on Friday 24th of December 2010 08:07:26 AM
12-24-2010
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int main()
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printf("B\n");
fork();
fork();
printf("D\n");
fork();
printf("C\n");
}
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i tried the following source codes:
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#include<sys/types.h>
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int flag;
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LEARN ABOUT BSD
fork
FORK(3F) FORK(3F) NAME
fork - create a copy of this process SYNOPSIS
integer function fork() DESCRIPTION
Fork creates a copy of the calling process. The only distinction between the 2 processes is that the value returned to one of them (referred to as the `parent' process) will be the process id of the copy. The copy is usually referred to as the `child' process. The value returned to the `child' process will be zero. All logical units open for writing are flushed before the fork to avoid duplication of the contents of I/O buffers in the external file(s). If the returned value is negative, it indicates an error and will be the negation of the system error code. See perror(3F). A corresponding exec routine has not been provided because there is no satisfactory way to retain open logical units across the exec. How- ever, the usual function of fork/exec can be performed using system(3F). FILES
/usr/lib/libU77.a SEE ALSO
fork(2), wait(3F), kill(3F), system(3F), perror(3F) 4.2 Berkeley Distribution May 27, 1986 FORK(3F)