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  • 简单的登陆代码

    #include<stdio.h>
    #include<string.h>                                                                                     \\因为下面会用到strcmp函数 比较两个数组大小

                                                                                                                          所以要加上其头文件
    main()
    {
     char a[10],b[10];                                                                                      \\账号和密码都定义为字符数组比较方便
     loop:printf("请输入账号\n");                                                                        \\在此做了一个loop的标号
     gets(a);
     printf("请输入密码\n");                                                                                  
     gets(b);
     if(strcmp(a,"shujun")==0 && strcmp(b,"sj7332124")==0)                            \\判断账号密码的正确性,
        {
     printf("登陆成功\n");
     }
        else {                                                                                                   \\如果密码错误则输出账号密码错误,

                                                                                                                       并且跳转到loop标号下重新输入账号密码
     printf("账号密码错误\n");
     goto loop;
        }
        return 0;
    }

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  • 原文地址:https://www.cnblogs.com/shujun/p/3128674.html
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