...和这一年的第一天是星期几,输出每个月的最后一天是星期几。_百度知...答:include <iostream> include <string> using namespace std;string str[12]={"January 31, ","February ","March 31, ","April 30, ","May 31, ","June 30, ","July 31, ","August 31, ","September 30, ","October 31, ","November 30, ","December 31, "};int day[12]={...