C语言:从键盘上输入a与n(a和n的值都在1之9之间)的值,计算sum=a+aa+aaa+……(共n项的和).例a=2,n=4,则sum=2+22+222+2222.输出2468怎样编程?
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![C语言:从键盘上输入a与n(a和n的值都在1之9之间)的值,计算sum=a+aa+aaa+……(共n项的和).例a=2,n=4,则sum=2+22+222+2222.输出2468怎样编程?](/uploads/image/z/1582253-53-3.jpg?t=C%E8%AF%AD%E8%A8%80%EF%BC%9A%E4%BB%8E%E9%94%AE%E7%9B%98%E4%B8%8A%E8%BE%93%E5%85%A5a%E4%B8%8En%28a%E5%92%8Cn%E7%9A%84%E5%80%BC%E9%83%BD%E5%9C%A81%E4%B9%8B9%E4%B9%8B%E9%97%B4%29%E7%9A%84%E5%80%BC%2C%E8%AE%A1%E7%AE%97sum%3Da%2Baa%2Baaa%2B%E2%80%A6%E2%80%A6%28%E5%85%B1n%E9%A1%B9%E7%9A%84%E5%92%8C%29.%E4%BE%8Ba%3D2%2Cn%3D4%2C%E5%88%99sum%3D2%2B22%2B222%2B2222.%E8%BE%93%E5%87%BA2468%E6%80%8E%E6%A0%B7%E7%BC%96%E7%A8%8B%3F)
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