求助LNK2001无法解析的外部符号main

问题代码如下

int jump(int* nums, int numsSize) {
    int steps = 0, end = 0, maxPos = 0;
    for (int i = 0; i < numsSize - 1; i++) {
        maxPos = nums[i] + i < maxPos ? maxPos : nums[i] + i;
        if (i == end) {
            end = maxPos;
            ++steps;
        }
    }
    return steps;
}