#import "ViewController.h"
#import "jsq.h"
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UILabel *label;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
jsqq = [[jsq alloc] init]; //初始化对象jsqq
}
- (IBAction)v:(UIButton *)sender {
if(jsqq.op==0) //判断是否已经按了运算符
{
jsqq.op1 = jsqq.op1*10 + sender.tag;
self.label.text = [NSString stringWithFormat:@"%f",jsqq.op1];
//将浮点数转化为字符串，并显示在label上
}
else {
jsqq.op2 = jsqq.op2*10 + sender.tag;
self.label.text = [NSString stringWithFormat:@"%f",jsqq.op2];
}
}
- (IBAction)c:(UIButton *)sender {
if(sender.tag==11)
{
self.label.text =@"+";//在label上显示字符“+”
jsqq.op = ‘+‘;
}
else if(sender.tag==12)
{
self.label.text =@"-";
jsqq.op = ‘-‘;
}
else if(sender.tag==13)
{
self.label.text =@"*";
jsqq.op = ‘*‘;
}
else if(sender.tag==14)
{
self.label.text =@"/";
jsqq.op = ‘/‘;
}
else if(sender.tag==15) //“=”键
{
float resurt;
if(jsqq.op == ‘+‘){
resurt = [jsqq add]; //调用方法，算出结果
}
else if(jsqq.op == ‘-‘){
resurt = [jsqq sub];
}
else if(jsqq.op == ‘*‘){
resurt = [jsqq mu];
}
else if(jsqq.op == ‘/‘){
resurt = [jsqq div];
}
self.label.text = [NSString stringWithFormat:@"%f",resurt];
jsqq.op1 = resurt;
jsqq.op2 = 0;
}
else if(sender.tag==16) //清零 “c”键
{
jsqq.op = 0;
jsqq.op1 = 0;
jsqq.op2 = 0;
self.label.text =@"0";
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
实现的效果如下：
Xcode 制作简易计算器
时间： 2024-11-09 22:27:06