.gitignoreの間違いを修正

example/fizzbuzz/.gitignore

 *.txt
-fizzbuzz*

example/fizzbuzz/fizzbuzz.c

+#include <stdio.h>
+
+int main(void)
+{
+	int i;
+
+	for (i = 1; i <= 50; i++)
+	{
+		if (i % (3 * 5) == 0)
+			printf("Fizz Buzz\n");
+		else if (i % 3 == 0)
+			printf("Fizz\n");
+		else if (i % 5 == 0)
+			printf("Buzz\n");
+		else
+			printf("%d\n", i);
+	}
+
+	return 0;
+}