Recent questions tagged char

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char - What is the best way to tell if a character is a letter or number in Java without using regexes?

What is the best and/or easiest way to recognize if a string.charAt(index) is an A-z letter or a ... without using regular expressions? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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char - Why does this code with '1234' compile in C++?

Why does this compile: char ch = '1234'; //no error But not anything more than 4 chars : char ch ... chars are represented using ASCII numbers? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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char - C: correct usage of strtok_r

How can I use strtok_r instead of strtok to do this? char *pchE = strtok(NULL, " "); Now I'm trying ... ? Cant understand why it comes NULL? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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359 views

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char and int in Java

I was surprised to see this code work. I thought that char and int were two distinct data types in Java and that I ... x = s.charAt(1); System.out.println(x); Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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char - How to return local array in C++?

char *recvmsg(){ char buffer[1024]; return buffer; } int main(){ char *reply = recvmsg(); .. ... warning C4172: returning address of local variable or temporary Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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432 views

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char - What format type are these actual numbers for Telnet negotiation in that other stackoverflow question ? (for IAC DO WONT etc.)

In this other question, of which the principle of the given solution was useful for me applied to a Python ... are-these-actual-numbers-for-telnet-negotiation-in-that-other-s...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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512 views

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char - Why should I ever choose any other length than 255 for varchar in MySQL?

I know the differnce between CHAR and VARCHAR, CHAR - Fixed length VARCHAR - Variable length (size + 1 byte) But I ... i-ever-choose-any-other-length-than-255-for-varchar-in-mysql...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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403 views

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char - C: correct usage of strtok_r

How can I use strtok_r instead of strtok to do this? char *pchE = strtok(NULL, " "); Now I'm trying ... :https://stackoverflow.com/questions/15961253/c-correct-usage-of-strtok-r...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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358 views

1 answer

char - C: correct usage of strtok_r

How can I use strtok_r instead of strtok to do this? char *pchE = strtok(NULL, " "); Now I'm trying ... :https://stackoverflow.com/questions/15961253/c-correct-usage-of-strtok-r...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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664 views

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char array initialize with string and int variable (c)

i would like to initialize a char array like this: char msg[] = "something 12"; This works so far, but to ... a smart way use a flexible initialization? Thanks for your help....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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