某班级若干个学生参加测试，在得到成绩后，确定班级测验平均分

int howMany;
int numToFind;
int nums[20];
int num;
scanf("%d%d", &howMany, &numToFind);
for( int i = 0; i < howMany; i++) {
  scanf("%d", &num);
  nums[i] = num
}

for (int i = 0; i < howMany; i++) {
  if (nums[i] == numToFind) {
    printf("Found at %d\n", i);
    return 0;
  }
}

printf("not Found");
return 0;