How to append string in Objective C?

How to append string in Objective C?

The format specifier “%@” is used to insert string values. The example below uses a combination of whitespace and %@ format specifiers to append two strings to string1: NSString * string3 = [string1 stringByAppendingFormat:@” %@ %@”, string2, @”A third string.

How do I read a text file in Objective C?

NSString* path = [[NSBundle mainBundle] pathForResource:@”filename” ofType:@”txt”]; Then loading the content into a NSString is even easier. NSString* content = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:NULL]; As a bonus you can have different localized versions of filename.

How to append NSString?

5 Answers. If you can append to the end of a string, you can prepend to the beginning of the string. You can use stringWithFormat too: NSString *A = @”ThisIsStringA”; NSString *B = @”ThisIsStringB”; B = [NSString stringWithFormat:@”%@%@”,A,B];

How to concatenate two NSString in Objective C?

To concatenate two strings into a new string:

1. NSString *string1 = @”This is”; NSString *string2 = @” a test.
2. NSString *string1 = @”This is”; NSString *string2 = @” a test.
3. NSMutableString *string1 = [NSMutableString stringWithString:@”This is”]; NSString *string2 = @” a test.

How do I create a text file in Objective C?

“write data to file objective c” Code Answer

1. //writes an textfile to an place in the document directory.
2. -(void)write:(NSString *)dir file:(NSString *)ff{
3. //get the documents directory:
4. NSArray *paths = NSSearchPathForDirectoriesInDomains.
5. (NSDocumentDirectory, NSUserDomainMask, YES);

How do you concatenate strings in Swift?

String values can be added together (or concatenated) with the addition operator ( + ) to create a new String value:

1. let string1 = “hello”
2. let string2 = ” there”
3. var welcome = string1 + string2.
4. // welcome now equals “hello there”

When to use file.appendtext ( string ) method?

The method creates a new file if the file doesn’t exist. However, the directory named temp on drive C must exist for the example to complete successfully.

How to append a text file in C?

Content of file_append.txt after ‘append’ operation is – This text was already there in the file. This text is appeneded later to the file, using C programming.

How does Io append text to a file?

IO Creates a StreamWriter that appends UTF-8 encoded text to an existing file, or to a new file if the specified file does not exist. The path to the file to append to. A stream writer that appends UTF-8 encoded text to the specified file or to a new file. The caller does not have the required permission.

How do you append ch to a string?

Use the strncat () function to append the character ch at the end of str. strncat () is a predefined function used for string handling. string.h is the header file required for string functions.