C/code/计算天数.c

#include <stdio.h>

int main() {
	int year, month, day;
	scanf("%d %d %d", &year, &month, &day);
	
	int result = day, i;
	for(i = 1; i < month; i++) {
		if (year % 4 == 0 && i == 2) result += 29;
		else {
			switch(i) {
				case 1: case 3: case 5: case 7: case 8: case 10: case 12: result += 31; break;
				case 2: result += 28; break;
				case 4: case 6: case 9: case 11: result += 30; break;
			}
		} 
	}
	
	printf("%d", result);
	
	return 0;
}