#include<iostream>
using namespace std;
struct time {
unsigned int year;
unsigned int month;
unsigned int day;
unsigned int hour;
unsigned int min;
unsigned int sec;
}nowtime;//注意标明构造函数形参类型
void Nowtime(unsigned int nowtime.year=2022, unsigned int nowtime.month=3, unsigned int nowtime.day=29, unsigned int nowtime.hour=10, unsigned int nowtime.min=28, unsigned int nowtime.sec=21)
int main()
{
Nowtime(2021);//1
cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day;
cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl;
Nowtime(2021,2);//2
cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day;
cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl;
Nowtime(2021,2,28);//3
cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day;
cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl;
Nowtime(2021,2,28,11);//4
cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day;
cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl;
Nowtime(2021,2,28,11,32);//5
cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day;
cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl;
Nowtime(2021,2,28,11,32,17);//6
cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day;
cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl;
return 0;
}
请问这段编码为什么总在默认形参函数那里报错?
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3条回答 默认 最新
- CSDN专家-link 2022-03-29 11:03关注
第12行只写了一个函数申明,函数体都没写啊。而且参数也没这么写法的。
#include<iostream> using namespace std; struct time { unsigned int year; unsigned int month; unsigned int day; unsigned int hour; unsigned int min; unsigned int sec; }nowtime;//注意标明构造函数形参类型 void Nowtime(unsigned int year=2022, unsigned int month=3, unsigned int day=29, unsigned int hour=10, unsigned int min=28, unsigned int sec=21) { nowtime.year = year; nowtime.month = month; nowtime.day = day; nowtime.hour = hour; nowtime.min = min; nowtime.sec = sec; } int main() { Nowtime(2021);//1 cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day; cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl; Nowtime(2021,2);//2 cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day; cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl; Nowtime(2021,2,28);//3 cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day; cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl; Nowtime(2021,2,28,11);//4 cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day; cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl; Nowtime(2021,2,28,11,32);//5 cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day; cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl; Nowtime(2021,2,28,11,32,17);//6 cout<<"The bjtime is:"<<nowtime.year<<"/"<<nowtime.month<<"/"<<nowtime.day; cout<<" "<<nowtime.hour<<":"<<nowtime.min<<":"<<nowtime.sec<<endl; return 0; }
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