46 lines
926 B
C
46 lines
926 B
C
#include <stdio.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <unistd.h>
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// pthread_detach 的使用
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void *task1(void *data)
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{
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// 提供一个整数值，计算它的阶乘
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int n = *((int *)data);
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int *ret = (int *)malloc(sizeof(int));
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*ret = 1;
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while (n)
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{
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*ret *= n--;
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}
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pthread_exit(ret);
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}
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int main(int argc, char const *argv[])
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{
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if (argc != 3)
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{
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printf("usage: ./%s 数字1 数字2\n", argv[0]);
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}
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pthread_t tid, tid2;
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int num = atoi(argv[1]);
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pthread_create(&tid, NULL, task1, (void *)&num);
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int *ret = (int *)malloc(sizeof(int));
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pthread_join(tid, (void **)&ret);
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int num2 = atoi(argv[2]);
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pthread_create(&tid, NULL, task1, (void *)&num2);
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int *ret2 = (int *)malloc(sizeof(int));
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pthread_join(tid, (void **)&ret2);
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printf("%d!*%d! = %d\n", num, num2, (*ret) * (*ret2));
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sleep(0.5);
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return 0;
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} |