C语言 中断并继续 (C)
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Break and Continue (C)
提问by Sentient
"Simon Says" is a memory game where "Simon" outputs a sequence of 10 characters (R, G, B, Y) and the user must repeat the sequence. Create a for loop that compares the two strings starting from index 0. For each match, add one point to userScore. Upon a mismatch, exit the loop using a break statement.
Ex: The following patterns yield a userScore of 4:
simonPattern: R, R, G, B, R, Y, Y, B, G, Y
userPattern: R, R, G, B, B, R, Y, B, G, Y
“西蒙说”是一种记忆游戏，其中“西蒙”输出 10 个字符（R、G、B、Y）的序列，用户必须重复该序列。创建一个 for 循环，比较从索引 0 开始的两个字符串。对于每个匹配项，向 userScore 添加一个点。在不匹配时，使用 break 语句退出循环。
例如：以下模式产生的 userScore 为 4：
西蒙模式：R、R、G、B、R、Y、Y、B、G、Y
用户模式：R、R、G、B、B、R、Y、B、G、Y
#include <stdio.h>
#include <string.h>
int main(void) {
char simonPattern[50] = "";
char userPattern[50] = "";
int userScore = 0;
int i = 0;
userScore = 0;
strcpy(simonPattern, "RRGBRYYBGY");
strcpy(userPattern, "RRGBBRYBGY");
while (userPattern[i] = simonPattern[i]) {
userScore = userScore + 1;
++i;
if (userPattern[i] != simonPattern[i]) {
break;
}
}
printf("userScore: %d\n", userScore);
return 0;
}
I tried running the code, but I got this
我尝试运行代码，但我得到了这个
http://i.imgur.com/T7srTbb.png
http://i.imgur.com/T7srTbb.png
Does anyone know what's causing the extra 1?
有谁知道是什么导致了额外的1？
Thanks.
谢谢。
回答by Neil Locketz
Change the condition in your while loop to use ==not =. Right now you are making an assignment and not comparing the two meaning the first chars will always be the same and give a score of 1. You can then remove the if statement from inside the loop.
将 while 循环中的条件更改为使用==not =。现在你正在做一个分配而不是比较这两个字符，这意味着第一个字符将始终相同并给出 1 分。然后你可以从循环内部删除 if 语句。
The assignment asks you to use a for loop and not a while. If you just move I into the for loop and fill out the rest, along with moving the increment to after the != check it would work.
作业要求您使用 for 循环而不是 while。如果您只是将 I 移入 for 循环并填写其余部分，同时将增量移动到 != 之后，请检查它会起作用。
回答by Appcoder
while (simonPattern.at(i) == userPattern.at(i))
{
++i;
++userScore;
}
回答by POTATO_IN_MY_ANUS
Be sure to use a "FOR" loop, I see that you're using a "WHILE" loop. You will want to use the == comparative operator as opposed to the = assignment operator.
请务必使用“FOR”循环，我看到您正在使用“WHILE”循环。您将需要使用 == 比较运算符而不是 = 赋值运算符。
Here's my code and it worked out fine:
这是我的代码，效果很好：
#include <stdio.h>
#include <string.h>
int main(void) {
char simonPattern[50];
char userPattern[50];
int userScore;
int i;
userScore = 0;
strcpy(simonPattern, "RRGBRYYBGY");
strcpy(userPattern, "RRGBBRYBGY");
i = 0;
for ( i = 0; userPattern[i] == simonPattern[i]; ++i) {
userScore = userScore +1;
if (userPattern[i] != simonPattern[i]){
break;
}
}
printf("userScore: %d\n", userScore);
return 0;
}
