finished ex5, i think?

serie1/ex5/.gitignore

+*.o
+multi_process

serie1/ex5/Makefile

+CC := clang
+CFLAGS := -g -pedantic -Wall -Wextra -std=c2x
+LDFLAGS := -fsanitize=address -fsanitize=leak -fsanitize=undefined -lm
+TARGET := multi_process
+
+all: $(TARGET)
+
+$(TARGET): multi_process.o
+	@printf "=================== Building executable ===================\n"
+	$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS)
+	@printf "\n"
+
+%.o: %.c
+	@printf "================== Building object files ==================\n"
+	$(CC) $(CFLAGS) -c $<
+	@printf "\n"
+
+.PHONY: clean
+
+clean:
+	rm -f *.o $(TARGET)
+
+

serie1/ex5/multi_process.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#define HOUR_IN_SEC 3600
+
+int main(void) {
+    pid_t pid = -1;
+    pid = fork();
+
+    if (pid > 0) {
+        wait(NULL);
+        fprintf(stdout, "parent(%d)\n", getpid());
+        fprintf(stdout, "return value of fork: %d\n", pid);
+
+        fprintf(stdout, "============= Counter =============\n");
+        for (int i = 0; i < 50; i++) {
+            fprintf(stdout, "%d\n", i);
+        }
+        fprintf(stdout, "===================================\n");
+
+        sleep(HOUR_IN_SEC);
+    } else if (pid == 0) {
+        fprintf(stdout, "child(%d)\n", getpid());
+        fprintf(stdout, "return value of fork: %d\n", pid);
+
+        fprintf(stdout, "============= Counter =============\n");
+        for (int i = 0; i < 50; i++) {
+            fprintf(stdout, "%d\n", i);
+        }
+        fprintf(stdout, "===================================\n");
+
+        exit(0);
+        // sleep(HOUR_IN_SEC);
+    } else {
+        perror("fork");
+    }
+
+    return EXIT_SUCCESS;
+}