改进后的代码如下所示。#define A(X)((t[X]-&#39；0&#39；))。int main() {。int i.j.N.m.flag。char t[3]。scanf(&quot；%d&quot；.&m)。for (j = 1；j &lt；= m；j++) {。printf(&quot；Case%d：&#92；n&quot；.j)。flag = 0。scanf(&quot；%d&quot；.&N)。for (i = 100；i &lt；1000；i++) {。sprintf(t.&quot；%d&quot；.i)。if ((A(0) + A(1)) * 2 + A(2) == N || (A(0) + A(1) + A(2)) * 2 == N) {。