日志16
1.十进制转二进制
#include <iostream>
using namespace std;
int main() {
int n;
cin >> n;
int binary[32];
int index = 0;
if (n < 0) {
cout << "-";
n = -1*n;
}
while (n > 0) {
binary[index++] = n % 2;
n /= 2;
}
if (index == 0) {
cout << "0B";
}
else {
for (int i = index - 1; i >= 0; i--) {
cout << binary[i];
}
cout << "B";
}
return 0;
}
2.字符串连接
string a,b,c;
c=a+b;