35 lines
436 B
C
35 lines
436 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <signal.h>
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int main(void){
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pid_t x1,x2,x3,x4;
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x1=fork();
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if (x1 == 0){
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x2=fork();
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if (x2>0) {
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sleep(10);
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kill(x2,SIGINT);
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}
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if (x2 == 0) {
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x3=fork();
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if (x3 == 0)
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x4=fork();
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if (x3 > 0){
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sleep(5);
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kill(x3,SIGINT);
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}
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}
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}
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if (x1 > 0)
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x4=fork();
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while(1) {
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printf(" %d\n", getpid());
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sleep(1);
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}
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}
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