I am relatively new to C and I need some help with methods dealing with arrays. Coming from Java programming, I am used to being able to say int [] method()in order to return an array. However, I have found out that with C you have to use pointers for arrays when you return them. … Read more
I have a char in c#: char foo = ‘2’; Now I want to get the 2 into an int. I find that Convert.ToInt32 returns the actual decimal value of the char and not the number 2. The following will work: int bar = Convert.ToInt32(new string(foo, 1)); int.parse only works on strings as well. Is … Read more
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last year. Improve this question I am trying to do some dynamic programming based on the number of characters in a sentence. Which letter of the … Read more
How do I parse a String value to a char type, in Java? I know how to do it to int and double (for example Integer.parseInt(“123”)). Is there a class for Strings and Chars? 14 Answers 14
The C++11 Standard (ISO/IEC 14882:2011) says in § C.1.1: char* p = “abc”; // valid in C, invalid in C++ For the C++ it’s OK as a pointer to a String Literal is harmful since any attempt to modify it leads to a crash. But why is it valid in C? The C++11 says also: … Read more
So I want to iterate for each character in a string. So I thought: for (char c : “xyz”) but I get a compiler error: MyClass.java:20: foreach not applicable to expression type How can I do this? 9 Answers 9
I just want to know if there’s a better solution to parse a number from a character in a string (assuming that we know that the character at index n is a number). String element = “el5”; String s; s = “”+element.charAt(2); int x = Integer.parseInt(s); //result: x = 5 (useless to say that it’s … Read more
When should I use single quotes and double quotes in C or C++ programming? 14 Answers 14
Converting a C++ string to a char array is pretty straightorward using the c_str function of string and then doing strcpy. However, how to do the opposite? I have a char array like: char arr[ ] = “This is a test”; to be converted back to: string str = “This is a test. 4 Answers … Read more
Is there a reason for this? I am asking because if you needed to use lots of empty chars then you get into the same situation as you would when you use lots of empty strings. Edit: The reason for this usage was this: myString.Replace (‘c’, ”) So remove all instances of ‘c’s from myString. … Read more
