// 371. Sum of Two Integers #include "leetcode.h" /* * given two integers 'a' and 'b', return the sum of the two integers without * using the operators '+' and '-'. */ int getSum(int a, int b) { int trigger = a & b, ans = a ^ b; while (trigger) { int carry = (trigger & 0xFFFFFFFF) << 1; trigger = carry & ans; ans ^= carry; } return ans; } int main() { printf("%d\n", getSum(1, 2)); // expect: 3 printf("%d\n", getSum(2, 3)); // expect: 5 }