进制转换

• 十进制 转 二进制

void main(){int i=0, j =0;int a[200] = {0};int num = 0;int count = 0;scanf("%d", &num);for(; num > 0; num/=2){a[i++] = num%2;}for(j = i-1; j >=0; j--){if(0 == a[j])count++;}printf("%d", count);return 0;}