以下程序使用枚举法(穷举法)求解满足条件的三位数,横线处应该填入的是()

#include <iostream>using namespace std; int main() {   int count = 0;   for (int i = 100; i <= 999; i++) {     int a = i / 100;     ————————————————————     int c = i % 10;     if (a * a + b * b == c * c) {        count++;     }   }   cout << count << endl;   return 0;}
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