用循环C语言程序问题 [英] C Program Problems with Loops

问题描述

我很新的编程和目前工作的一个程序（它没有在附近完成的），但我想不出如何以及为什么这是不行的。我必须失去了与'如果'和'其他'

东西

 的#include＆LT;＆stdio.h中GT;INT主要（无效）
{
    的printf（欢迎来到机器人GAME！\\ n
           请输入您的出发点列保存号码一到三的范围\\ n。）;    诠释A，B;
    如果（1 << = A＆下; = 3）;
    {
        scanf函数（％i的，＆安培;一）;
    }
    其他
       {
        的printf（对不起再试一次。）;
       }    的printf（请输入您的出发点的行保留号码一到三的范围\\ n。）;
    如果（1＆GT; = b将; = 3）;
        scanf函数（％i的，和b）;
    的printf（什么是你的下一步行动？选择\\ n
           1.右键\\ n
           2.Left \\ n
           3.Up \\ n
           4.Down \\ n）;}
 

解决方案

第一个臭虫

  INT A，B;
如果（1 << = A＆下; = 3）;
 

您如何检查 A 在如果的条件，甚至是未初始化？首先通过初始化值 A 和 B （用 1 ）然后去解决二错误

第二个错误

 如果（1 << = A＆LT; = 3）;
 

删除; 在如果条件，然后去修复第三错误

第三个错误

 如果（1 << = A＆LT; = 3）;
 

是不是该做你想要什么。它应该

 如果（A＆GT; = 1＆安培;＆安培; A＆LT; = 3）
 

现在同样适用于如果（1＆GT; = B＆LT; = 3）; 按照每个上面的步骤来解决这个问题。

第四错误

您有 INT主要（无效）。因此需要返回0 在结束主

I'm very new to programming and currently working on a program (it is no where near done) but I cannot figure out how and why this won't work. I must be missing something with the 'if' and 'else'

#include <stdio.h>

int main(void)
{
    printf("Welcome to the ROBOT GAME!\n"
           "Please enter the column of your starting point. Keep numbers in the range of one to three.\n");

    int a, b;
    if(1<=a<=3);
    {
        scanf("%i", &a);
    }
    else 
       {
        printf("Sorry try again.");
       }

    printf("Please enter the row of your starting point.  Keep numbers in the range of one to three.\n");
    if(1>=b<=3);
        scanf("%i", &b);
    printf("What is your next move? Pick\n"
           "1.Right\n"
           "2.Left\n"
           "3.Up\n"
           "4.Down\n");

}

解决方案

First Bug

int a, b;
if(1<=a<=3);

How can you check a in if condition even it not initialized?. First Fix it by initializing value to a and b ( with 1) Then go for to fix Second Bug

Second Bug

if(1<=a<=3);

Remove ; after if condition then go for Fix Third Bug

Third Bug

if(1<=a<=3);

is not suppose to do what you want. it should

if(a>= 1 && a <= 3)

Now same is true for if(1>=b<=3); Follow every above steps to fix this.

Fourth Bug

You have int main(void). So need to return 0 at end of main

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