需要考虑以下几种情况#include <stdio.h>int main() { int y, m, d; int y1, m1, d1; scanf("%d %d %d\n%d %d %d", &y, &m, &d, &y1, &m1, &d1); if(y1>y){ printf("yes"); } else if(y1 == y && m1>m){ printf("yes"); } else if(y1 == y &&...