已知数据文件IN.DAT中存有200个四位数，并已调用读函数readDat()把这些数存入数组a中，请考生编制一函数jsVal( )，其功能是：如果四位数各位上的数字均是0或2或4或6或8，则统计出满足此条件的个数cnt，并把这些四位数按从大到小的顺序存入数组b中。最后main( )函数调用写函数writeDat()把结果cnt以及数组b中符合条件的四位数输出到OUT.DAT文件中。-There are known data file IN.DAT in 200 four-digit, and has called time function readDat () array into a number of these, please prepare candidates for a function jsVal (), and its function is: If the four-digit Members on the figures is 0 or 2 or 4 or 6 or 8, then the statistics that meet this condition, the number of cnt, and these four-digit sequence were deposited by the array b,. Finally main () function call to write the function writeDat () the results of the array b, cnt, and qualified four-digit output to OUT.DAT file.