code.c

int* twoSum(int* nums, int numsSize, int target, int* returnSize){

       int first_num=nums[0], second_num=nums[1], index_of_first_num=0, index_of_second_num=1;
    for (int i = 0; i < sizeof(nums); i++)
    {
        first_num=nums[i];
        for (int j = 0; j < sizeof(nums); j++)
        {
            second_num=nums[j];
            /* code */
            if ((first_num+second_num)==9)
            {
                index_of_first_num=i;
                index_of_second_num=j;
            }
            

        }
        
    }
    int temparr[]={index_of_first_num,index_of_second_num};
    return temparr;
}