C语言编写2020年7月的日历?答:include <stdio.h>int leap(int year){if((year%4==0&&year%100!=0)||year%400==0){return 1;}else{return 0;}}int calendar(int year,int month1){int alld=0,stad;int month[12]={31,28,31,30,31,30,31,31,30,31,30,31};month[1]+=leap(year);//判断二月份天数for(...