add two strings + obbjective C code example

Example 1: objective c strings concatenate

result = [result stringByAppendingString:@"This is "];

Example 2: objective c strings concatenate

- (NSString *)strCat: (NSString *)one: (NSString *)two
{
    NSString *myString;
    myString = [NSString stringWithFormat:@"%@%@", one , two];
    return myString;
}