小编Joh*_*one的帖子

每当我尝试更新我的 EC2 实例时，都会收到以下错误：

Loaded plugins: priorities, update-motd, upgrade-helper
amzn-main                                                                                                                                                                                   | 2.1 kB  00:00:00
amzn-updates                                                                                                                                                                                | 2.5 kB  00:00:00
817 packages excluded due to repository priority protections
Resolving Dependencies
--> Running transaction check
---> Package aws-cfn-bootstrap.noarch 0:1.4-30.21.amzn1 will be updated
---> Package aws-cfn-bootstrap.noarch 0:1.4-31.22.amzn1 will be an update
---> Package curl.x86_64 0:7.53.1-16.85.amzn1 will be updated
---> Package curl.x86_64 0:7.53.1-16.86.amzn1 will be an update
---> Package db4.x86_64 0:4.7.25-18.11.amzn1 will be obsoleted
--> Processing Dependency: libdb-4.7.so()(64bit) for package: rpm-libs-4.11.3-21.75.amzn1.x86_64
--> Processing Dependency: libdb-4.7.so()(64bit) …

我认为问题在于我没有使用./a.out而不是./filename,但事实并非如此.

这是我编译程序的方式:

g++ -o -Wall -pthread filename.cpp

运行:

./filename

我认为运行pthread程序与运行标准c ++程序不同,但事实并非如此.

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h> 

struct argStruct {
    int arg1;
    int arg2;

};

void *sum(void *arguments) {
    struct argStruct *args = (struct argStruct *)arguments;

    int a =  args -> arg1;
    int b =  args -> arg2;
    int c = a + b;
    printf("%d + %d = %d ",a,b,c);
    pthread_exit(NULL);

}

int main() {

    pthread_t thr1, thr2;
    struct argStruct args;
    args.arg1 = 3;
    args.arg2 = 10;

    int …