@jitendra u got it right but parent and child are using the same text region
that's why control is transferring back and forth..
try running this code and see that line numbers are repeating...because of
same text region it is working like a loop...
#include<stdio.h>
int main() {
int id,i;
if((id=vfork())==0) { //child
printf(" %d in child\n",__LINE__);
sleep(3);
printf("%d\n",i);
}
else { //parent
printf(" %d in parent\n",__LINE__);
scanf("%d",&i);
sleep(1);
printf("%d\n",i);
}
return 0;
}
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