85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
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#include <stdio.h>
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#include <pthread.h>
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pthread_mutex_t mutex;
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pthread_cond_t condition;
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int max_number;
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int current_number;
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void *print_odd(void *arg)
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{
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while (1)
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{
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pthread_mutex_lock(&mutex);
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while (current_number % 2 == 0)
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{ // 等待偶数线程通知
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pthread_cond_wait(&condition, &mutex);
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}
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if (current_number > max_number)
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{ // 达到最大值时退出
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pthread_mutex_unlock(&mutex);
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break;
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}
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printf("%d", current_number);
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if (current_number != max_number)
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printf("、");
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else if (current_number == max_number)
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printf("\n");
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fflush(stdout);
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current_number++;
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pthread_cond_signal(&condition); // 通知偶数线程
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pthread_mutex_unlock(&mutex);
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}
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return NULL;
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}
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void *print_even(void *arg)
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{
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while (1)
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{
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pthread_mutex_lock(&mutex);
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while (current_number % 2 != 0)
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{ // 等待奇数线程通知
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pthread_cond_wait(&condition, &mutex);
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}
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if (current_number > max_number)
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{ // 达到最大值时退出
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pthread_mutex_unlock(&mutex);
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break;
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}
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printf("%d", current_number);
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if (current_number != max_number)
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printf("、");
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else if (current_number == max_number)
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printf("\n");
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fflush(stdout);
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current_number++;
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pthread_cond_signal(&condition); // 通知奇数线程
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pthread_mutex_unlock(&mutex);
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}
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return NULL;
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}
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int main()
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{
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printf("请输入指定的最大值: ");
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scanf("%d", &max_number);
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pthread_mutex_init(&mutex, NULL);
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pthread_cond_init(&condition, NULL);
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current_number = 1;
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pthread_t odd_thread, even_thread;
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pthread_create(&odd_thread, NULL, print_odd, NULL);
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pthread_create(&even_thread, NULL, print_even, NULL);
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pthread_join(odd_thread, NULL);
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pthread_join(even_thread, NULL);
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pthread_mutex_destroy(&mutex);
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pthread_cond_destroy(&condition);
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return 0;
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}
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