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#include<stdio.h>
#include<stdbool.h>
bool serach(int arr[], int target, int* index, int size) {
	for (int i = 0;i < size;i++) {
		if (arr[i] == target) {
			*index = i;
			return true;
		}
	}
	return false;
}
int main(void) {
	int data[] = { 6, 66, 66, 666 };
	int target;
	int n;
	int index = 1;
	scanf_s("%d", &target);
	n = sizeof(data) / sizeof(data[0]);
	if (serach(data, target, &index, n)) {
		printf("目标值 %d 位于索引 %d\n", target, index);
	}
	else {
		printf("目标值 %d 不在数组中\n", target);
	}

	return 0;
}