1、初始化NSString*str1=@"aOCProgram";2、初始化NSString*str2=[[NSStringalloc]initWithFormat:@"字符串2:%d",100];3、初始化NSString*str3=[NSStringstringWithFormat:@"%@%d",@"类方法",9...

常见的NSString和NSMutableString方法：NSString方法:...