例如输入508就输出5+0+8的和13;
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <script type="text/javascript"> //输入三位数求其和 //第一步转为数字类型 var g = prompt("请输入一个三位数"); var gg = parseInt(g); //155/100=1.55 取1 var h = parseInt(gg/100); //155%100=1...55,55/10=5.5 取5 var i = parseInt(gg%100/10); // 155&10=15...5 var j = parseInt(gg%10); var k = h+i+j; console.log(k) </script> </body> </html> 这个程序的关键就是求十位数,百位和个位都能想到
时间: 2024-11-03 21:20:35