create two dataframes and then join them by column variable in r and introduce nas when they don't match in r

main.r
# Create two dataframes
df1 <- data.frame(id = c(1, 2, 3, 4),
                  name = c("Alice", "Bob", "Charlie", "David"))

df2 <- data.frame(id = c(1, 2, 4, 5),
                  age = c(25, 30, 35, 40))

# Perform a left join on 'id' column and introduce NAs when they don't match
result <- merge(df1, df2, by = "id", all.x = TRUE)

print(result)
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