#include <stdio.h> int main() {int i,j,upp,low,temp; char text[8][3]; upp=low=0; for(i=0;i<8;i++) {printf("please input line %d: \n",i+1); gets(text[i]); for(j=0;j<8&amp;&amp;text[i][j]!='\0';j++); {if(text[i][j]>='A'&amp;&amp; text[i][j]<='Z') upp++; else if(text[i][j]>='a' &amp;...

#include <stdio.h> main() {float y1,y2,m1,d1,m2,d2; int i,j,d,rn; printf("请输入两日期中各自的年、月、日:"); scanf("%f,%f,%f,%f,%f,%f",&amp;y1,&amp;m1,&amp;d1,&amp;y2,&amp;m2,&amp;d2); if(y1<y2) for(i=y1;i<y2;i++) { rn=((i%4==0&amp;&amp;i%100!=0)||i%400==0)?1:0; for(j=m1;j<m2;j++) switch(j)...