C语言编程:编写程序,可以将一个大数,如10000000,每隔四位,用一个逗号...答:/ 99500000 => 9950,0000 99600000 => 9960,0000 99700000 => 9970,0000 99800000 => 9980,0000 99900000 => 9990,0000 100000000 => 1,0000,0000 100100000 => 1,0010,0000 100200000 => 1,0020,0000 100300000 => 1,0030,0000 100400000 => 1,0040,0000 100500000 => 1,0050,0000 10060...