1.统计10进制转化为2进制1的个数

int total2Cnts(int x){         int count = 0;         while(x)         {              ++count;              x = x&(x-1);         }         cout << endl;         return count;} int main(){         int num = 9999;         for( int i = 0; i < 100; i++)         {              cout << i <<"中1的个数为:" <<total2C
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