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The vfork() function differs from fork() only in that the child process can share code and data with the calling process (parent process). This speeds cloning activity significantly at a risk to the integrity of the parent process if vfork() is misused.

The use of vfork() for any purpose except as a prelude to an immediate call to a function from the exec family, or to _exit(), is not advised.

The vfork() function can be used to create new processes without fully copying the address space of the old process. If a forked process is simply going to call exec, the data space copied from the parent to the child by fork() is not used. This is particularly inefficient in a paged environment, making vfork() particularly useful. Depending upon the size of the parent's data space, vfork() can give a significant performance improvement over fork().

offsets[0]=13;
offsets[1]=___;
offsets[2]=___;
offsets[3]=___;
offsets[4]=___;

offsets[0]=13;
offsets[1]=12;
offsets[2]=244;
offsets[3]=0;
offsets[4]=0;


for(i = 0; i < 3; i++) {
.....
}

a = a+50; ...