力は第1題の2数の和C言語版を掛けます

int* twoSum(int* nums, int numsSize, int target, int* returnSize){
    *returnSize=2;
    static int a[2];      //*a = (int*)malloc(2 * sizeof(int))
	int i,j;
    for(i=0; i<numsSize-1; i++){
        for(j=i+1; j<numsSize; j++){
            if(nums[i]+nums[j] == target){
                a[0]=i;
                a[1]=j;
                return a;
            }
        }
    }
    return 0;
}