여름날의 블로그

#include<stdio.h>
#include<math.h>
void main()
{

int sy=0,sm=0,
 sd=0,cy=0,cm=0,cd=0;
do
printf("Input the starting day:");
scanf("%d %d %d", &sy, &sm, &sd);
printf("Input the current day:");
scanf("%d %d %d", &cy, &sm, &cd);
while(sy>=0&&sm>=0&&sd>=0&&cy>=0&&cm>=0&&cd>=0);

}