阅读下列程序,则执行结果是
#include"stdio.h"
main()
{inta=0,b=0,c=0,i;
for(i=0;i<4;i++)
switch(i)
{case0:a=i++;
case1:b=i++;
case2:c=i++;
case3:i++;}
printf("%d,%d,%d,%d\n",a,b,c,i);}
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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