《C语言入门100例》(第1例) A+B

[youmo_wy]

练习题的来源：https://blog.csdn.net/WhereIsHeroFrom/article/details/118739504

题1：(来源：https://leetcode-cn.com/problems/sum-of-two-integers/)

 

int getSum(int a, int b){
    if(!b) return (unsigned int)a;
    return getSum(a ^ b, ((unsigned int)(a & b)) << 1);
}

 题2：(来源：https://leetcode-cn.com/problems/recursive-mulitply-lcci/)

int multiply(int A, int B){
    int result;
    if (B > 1){
        result = multiply(A, B - 1) + A;
    } else {
        result = A;
    }

    return result;
}