使用NSLog方法格式化输出信息

以下是格式化int,float,double和long型的示例

 

 //

//  PrintFormat.h
//  DataTypes
//
//

#import <Foundation/Foundation.h>

 

@interface PrintFormat : NSObject

{

}

-(void) print;

@end

实现部份

//
//  PrintFormat.m
//  DataTypes
//
//

#import "PrintFormat.h"

 

@implementation PrintFormat

 

int num=90;
float _num=90;
double number=700.000;
long mlong=30;  

-(void) print{

NSLog(@"The value of integer num is %i", num);   //for integer the format specifier is %i

NSLog(@"The value of Long number is %i", mlong);   //for Long the format specifier is also %i

NSLog(@"The value of float num is %.2f", _num);   //for float the format specifier is %f and we can restrict it to print only two decimal place value by %.2f

NSLog(@"The value of double num is %f", number);   //for Double the format specifier is %f (double can be represented in %e ,%E (in this it will be in exponentail form as well as in %e) , %g ,%G )

}

@end