path: root / Year 3 / System programming / Practice06 / ex3.c


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#include <unistd.h> // pipe
#include <stdio.h>

int main(int argc, char* argv[]) {
	int filedes[2];
	if (pipe(filedes) < 0) {
		perror("pipe");
		return 1;
	}

	char buf = 'a';
	write(filedes[0], &buf, 1);
	char bufin;
	read(filedes[1], &bufin, 1);
	printf("%c\n", bufin);
}