34 lines
694 B
C
34 lines
694 B
C
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(){
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int i;
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int x1, x2;
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int ecrit, lu;
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int p[2];
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pipe(p);
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for (i=0; i<3; i++){
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x1 = fork();
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if (i==0 && x1==0){
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x2 = fork();
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if (x2 == 0){
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read(p[0],&lu,sizeof(int));
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printf("%d received %d\n", getpid(), lu);
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close(p[0]);
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}
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}
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if (i==1 && x1==0){
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x2 = fork();
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if (x2==0){
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ecrit = getpid();
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write(p[1],&ecrit,sizeof(int));
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close(p[1]);
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}
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}
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}
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return EXIT_SUCCESS;
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}
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