char – Tarik Billa

F#, char seq -> strings

April 9, 2024 by Tarik

I was just researching this myself. I found that System.String.Concat works pretty well, e.g. “abcdef01234567” |> Seq.take 5 |> String.Concat;; assuming that you’ve opened System.

Why is conversion from string literal to ‘char*’ valid in C but invalid in C++

February 3, 2024 by Tarik

Up through C++03, your first example was valid, but used a deprecated implicit conversion–a string literal should be treated as being of type char const *, since you can’t modify its contents (without causing undefined behavior). As of C++11, the implicit conversion that had been deprecated was officially removed, so code that depends on it … Read more

Why is the size of a character sizeof(‘a’) different in C and C++? [duplicate]

January 17, 2024 by Tarik

In C, the type of a character constant like ‘a’ is actually an int, with size of 4 (or some other implementation-dependent value). In C++, the type is char, with size of 1. This is one of many small differences between the two languages.

What is the difference between UTF-32 and UCS-4?

January 6, 2024 by Tarik

The Unicode Standard Version 8.0, Appendix C states: UCS-4 stands for “Universal Character Set coded in 4 octets.” It is now treated simply as a synonym for UTF-32, and is considered the canonical form for representation of characters in ISO 10646 (Universal Coded Character Set).

Casting or converting a char to an NSString in Objective-C

January 5, 2024 by Tarik

You can use stringWithFormat:, passing in a format of %c to represent a character, like this: char c=”a”; NSString *s = [NSString stringWithFormat:@”%c”, c];

How to print a char array in C through printf? [closed]

January 4, 2024 by Tarik

The code posted is incorrect: a_static and b_static should be defined as arrays. There are two ways to correct the code: you can add null terminators to make these arrays proper C strings: #include <stdio.h> int main(void) { char a_static[] = { ‘q’, ‘w’, ‘e’, ‘r’, ‘\0’ }; char b_static[] = { ‘a’, ‘s’, ‘d’, … Read more

Convert char array to single int?

January 3, 2024 by Tarik

There are mulitple ways of converting a string to an int. Solution 1: Using Legacy C functionality int main() { //char hello[5]; //hello = “12345”; —>This wont compile char hello[] = “12345”; Printf(“My number is: %d”, atoi(hello)); return 0; } Solution 2: Using lexical_cast(Most Appropriate & simplest) int x = boost::lexical_cast<int>(“12345”); Solution 3: Using C++ … Read more

What does an asterisk in a scanf format specifier mean? [duplicate]

January 1, 2024 by Tarik

*c means, that a char will be read but won’t be assigned, for example for the input “30a” it will assign 30 to word_count, but ‘a’ will be ignored.

What does it mean for a char to be signed?

December 30, 2023 by Tarik

It won’t make a difference for strings. But in C you can use a char to do math, when it will make a difference. In fact, when working in constrained memory environments, like embedded 8 bit applications a char will often be used to do math, and then it makes a big difference. This is … Read more

Detecting all emojis

December 23, 2023 by Tarik