下面是gpt给出的回答,不知道是否正确,请看代码:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
#define MAX_ERRORS 5 //timer errors
#define TIME_LIMIT 60 // in seconds
// Function to check if the timestamp is within the 1-minute window
int is_within_time_limit(time_t start_time, time_t current_time) {
return (difftime(current_time, start_time) <= TIME_LIMIT);
}
//timestamps : time ; error_event : error:1
uint8_t monitor_errors(uint32_t timestamps,uint8_t error_event){
static uint8_t error_count = 0;
static uint32_t monitor_start_time = 0;
static uint8_t alarm_triggered = 0;
if (monitor_start_time == 0 || !error_event) {
monitor_start_time = timestamps;
error_count = 0;
alarm_triggered = 0;
printf("\nMonitoring restarted. Timestamp: %ld\n", monitor_start_time);
}
// Check if the current event is within the 1-minute monitoring window
if (is_within_time_limit(monitor_start_time, timestamps)) {
if (error_event) {
error_count++;
printf("Error detected. Current error count: %d\n", error_count);
}
if (error_count >= MAX_ERRORS && !alarm_triggered) {
alarm_triggered = 1;
printf("ALARM! Too many errors detected within 1 minute.\n");
}
} else {
// Outside the 1-minute window, reset monitoring
monitor_start_time = timestamps;
error_count = error_event ? 1 : 0;
alarm_triggered = 0;
printf("Monitoring window reset. Timestamp: %ld\n", monitor_start_time);
}
return alarm_triggered;
}
int main() {
// Simulated series of events with timestamps and error flags
uint32_t start = 1000;
uint8_t step = 20;
time_t timestamps[] = {start, start+step*2, start+step*3, start+step*4, start+step*5, start+step*6, start+step*7, start+step*8, start+step*9, start+step*10};
int error_events[] = {1, 1, 1, 1, 1, 1, 0, 1, 0, 1};
int num_events = sizeof(error_events) / sizeof(error_events[0]);
for (int i = 0; i < num_events; i++) {
int alarm = monitor_errors(timestamps[i], error_events[i]);
if (alarm) {
printf("Action required due to alarm state.\n");
}
}
return 0;
}
main 函数开始执行,首先手动创建2个数组,代表用户在输入秘密时的时间参数以及错误密码标志,密码错误即时1,密码正确0,(当密码正确时0 重新统计)。
不知道这个函数对不对~~~

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