(ios) NSString (二)【stringByAppendingString:】

【環境：xCode4.2 , ios5.1】
名稱：字串相加
語法：[string1 stringByAppendingString:string2]
說明：這個的好處就是....可以一直無限加下去

<以下範例>

    NSString *string1 = @"n";
    NSString *string2 = [[NSString alloc] initWithFormat:@"studio"];
    string1 = [[string1 stringByAppendingString:@"11 "] stringByAppendingString:string2];
    NSLog(@"%@",string1);
    //the answer is "n11 studio"