C语言ry

A. c语言pan'd

#include #include int main (){int num,i,j;double arry[20][3],C,area;printf("请输入三角形的个数，不要超过20个：\n");scanf("%d",&num);printf("请依次输入三角形的边长，按空格隔开\n"); for (i=1;iarry[i][2])&&(arry[i][0]+arry[i][2]>arry[i][1])&&(arry[i][1]+arry[i][2]>arry[i][0])) { C=(arry[i][0]+arry[i][1]+arry[i][2])/2; area=sqrt(C*(C-arry[i][0])*(C-arry[i][1])*(C-arry[i][2])); printf("area=%.2lf\n",area); } else printf("can't\n"); } return 0;} 第二题：平年闰年都有考虑，可能出错的数据运行了一下。#includeintpanan(intyear);intmain(){intnum,i,j,k,arry[20][3],num_Day=0;printf("请输入数据的个数，不要超过20个：\n");scanf("%d",&num);printf("请依次输入年月日，按空格隔开\n"); for(i=1;i9999)|(arry[i][1]12)|(arry[i][2]31)| ((panan(arry[i][0]))&(arry[i][2]>=30)&(arry[i][1]==2))|(!(panan(arry[i][0]))&(arry[i][2]>=29)&(arry[i][1]==2)) )//把年月日输错的直接报错 printf("WrongInput\n"); else { if(arry[i][1]==1)printf("这是第%d天\n",arry[i][2]); else { for(j=1;j