learnedfor loop，In practice when it came to getchar()) != ‘n’ The problem。I.e.while loopSo that in thefor loopEnter the void (to be treated as a character。）
All to known，getchar functionUsed to get the character，And if the direct use in a loop，It found that the situation will not be able to press enter characters into the system。The reason is the carriage return character is so ~，Enter the same time we want to join it is " \n "Discrimination，That has getchar()!='n' ，With this approach while Circulation work well，Available at for Under cycling there are many novice shouted ineffective。
= = I was one of them。
What we do know is for The format of this cycle is：
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for(赋值或某语句（在循环的开始）;执行条件，若值为真则循环;循环完一次执行这里的语句) |
so，According to my understanding，Use a for loop to get the input string should be like a child
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for(c = getchar();c != '\n';) |
Enter decisive executable found still useless，Resolute character is treated as a system to deal with。After Google found the problem hehe
original，exist for(c = getchar();c != 'n';) in c = getchar() Before execution cycle，That is circulating in a separate statement executed，Natural Enter "invalid"，That is, !='n' Needs and c = getchar() Write together，As a condition for loop execution，So each for loop，As long as the establishment of a second conditional statement，Will be executed。
Original article written by LogStudio：R0uter's Blog » c = getchar()) != ' N' and for loop
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