1#include <stdio.h>
 2
 3int main(void)
 4{
 5	int upper;
 6
 7	scanf("%d", &upper);
 8
 9	for (int i = 1; i <= upper; i++)
10		if (i % 3 == 0 && i % 5 == 0)
11			printf("%s ", "fizzbuzz");
12		else if (i % 3 == 0)
13			printf("%s ", "fizz");
14		else if (i % 5 == 0)
15			printf("%s ", "buzz");
16		else
17			printf("%d ", i);
18
19	puts("");
20
21	return 0;
22}
23

 1#include <stdio.h>
 2
 3int main(void)
 4{
 5	char line[BUFSIZ];
 6
 7	size_t i;
 8	int c;
 9
10	for (i = 0; i < sizeof(line) - 1 && (c = getchar()) != EOF && c != '\n'; i++)
11		line[i] = c;
12
13	line[i] = '\0';
14
15	printf("Hello %s!\n", line);
16
17	return 0;
18}
19