char

问题 I need a way to pass an array to char* from Python using ctypes library to a C library. Some ways I've tried lead me to segmentation faults, others to rubbish info. 回答1: As I've been struggling with this issue for some time, I've decided to write a small HowTo so other people can benefit. Having this C piece of code: void passPointerArray(int size, char **stringArray) { for (int counter=0; counter < size; counter++) { printf("String number %d is : %s\n", counter, stringArray[counter]); } } We

问题 Im trying to implement a chartercter limit for a textArea in react js here is my code. state = { chars_left: 140; } handleWordCount = event => { const charCount = event.target.value.length; const maxChar = this.state.chars_left; const charLength = maxChar - charCount; this.setState({ chars_left: charLength }); } <textArea rows={6} type="text" maxLength="140" required onChange={this.handleWordCount} /> { ${this.state.chars_left} } I have a function that should that show how many character the

问题 Im trying to implement a chartercter limit for a textArea in react js here is my code. state = { chars_left: 140; } handleWordCount = event => { const charCount = event.target.value.length; const maxChar = this.state.chars_left; const charLength = maxChar - charCount; this.setState({ chars_left: charLength }); } <textArea rows={6} type="text" maxLength="140" required onChange={this.handleWordCount} /> { ${this.state.chars_left} } I have a function that should that show how many character the

问题 Im trying to implement a chartercter limit for a textArea in react js here is my code. state = { chars_left: 140; } handleWordCount = event => { const charCount = event.target.value.length; const maxChar = this.state.chars_left; const charLength = maxChar - charCount; this.setState({ chars_left: charLength }); } <textArea rows={6} type="text" maxLength="140" required onChange={this.handleWordCount} /> { ${this.state.chars_left} } I have a function that should that show how many character the

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . Improve this question I have an integer array: int a[5]={5,21,456,1,3} I need to store these number into char array so that the char array will have some thing like this: char *s="52145613"; Is there any library function in c for this? 回答1: sprintf do what you need. Little example

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . Improve this question I have an integer array: int a[5]={5,21,456,1,3} I need to store these number into char array so that the char array will have some thing like this: char *s="52145613"; Is there any library function in c for this? 回答1: sprintf do what you need. Little example

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . Improve this question I have an integer array: int a[5]={5,21,456,1,3} I need to store these number into char array so that the char array will have some thing like this: char *s="52145613"; Is there any library function in c for this? 回答1: sprintf do what you need. Little example

问题 I'm wondering what's the difference between char s[] = "hello" and char *s = "hello" . After reading this and this, I'm still not very clear on this question. As I know, there are five data segments in memory, Text, BSS, Data, Stack and Heap. From my understanding, in case of char s[] = "hello" : "hello" is in Text. s is in Data if it is a global variable or in Stack if it is a local variable. We also have a copy of "hello" where the s is stored, so we can modify the value of this string via

问题 I'm wondering what's the difference between char s[] = "hello" and char *s = "hello" . After reading this and this, I'm still not very clear on this question. As I know, there are five data segments in memory, Text, BSS, Data, Stack and Heap. From my understanding, in case of char s[] = "hello" : "hello" is in Text. s is in Data if it is a global variable or in Stack if it is a local variable. We also have a copy of "hello" where the s is stored, so we can modify the value of this string via

问题 I have looked around the googleverse and stack overflow and have seen several similar questions to this but none of the answers I have found have worked for me. I am a new member so I am not allowed to comment on answers in someone else's question to ask for clarification so I have had to resort to asking my own. Ok so I am trying to pass a string array from a C# application to a C++ dll and then grab that information in another C# application. I believe I am passing to C++ properly but I can