我正在制作一个小文件阅读和数据验证程序,作为我的TAFE(大专院校)课程的一部分,这包括检查和验证日期.
我决定最好用一个单独的类来完成,而不是将它集成到我的主驱动程序类中.
问题是我的测试程序运行后出现了分段错误(核心转储).我可以说,在程序终止时发生错误,在调用析构函数后弹出.到目前为止,我没有找到这个错误的原因,并且希望一些开明的灵魂可能向我展示我的方式的错误.
date.h
#ifndef DATE_H
#define DATE_H
#include <string>
using std::string;
#include <sstream>
using std::stringstream;
#include <cstdlib>
using std::exit;
#include <iostream>
using std::cout;
using std::endl;
class date {
public:
explicit date();
~date();
bool before(string dateIn1,string dateIn2);
int yearsBetween(string dateIn1,string dateIn2);
bool isValid(string dateIn);
bool getDate(int date[],string dateIn);
bool isLeapYear(int year);
private:
int days[];
};
#endif
date.cpp
#include "date.h"
date::date() {
days[0] = 31;
days[1] = 28;
days[2] = 31;
days[3] = 30;
days[4] = 31;
days[5] = 30;
days[6] = 31;
days[7] = 31;
days[8] = 30;
days[9] = 31;
days[10] = 30;
days[11] = 31;
}
bool date::before(string dateIn1,string dateIn2) {
int date1[3];
int date2[3];
getDate(date1,dateIn1);
getDate(date2,dateIn2);
if (date1[2] < date2[2]) {
return true;
} else if (date1[1] < date2[1]) {
return true;
} else if (date1[0] < date2[0]) {
return true;
}
return false;
}
date::~date() {
cout << "this is for testing only,plox delete\n";
}
int date::yearsBetween(string dateIn1,dateIn2);
int years = date2[2] - date1[2];
if (date1[1] > date2[1]) {
years--;
}
if ((date1[1] == date2[1]) && (date1[0] > date2[1])) {
years--;
}
return years;
}
bool date::isValid(string dateIn) {
int date[3];
if (getDate(date,dateIn)) {
if (date[1] <= 12) {
int extraDay = 0;
if (isLeapYear(date[2])) {
extraDay++;
}
if ((date[0] + extraDay) <= days[date[1] - 1]) {
return true;
}
}
} else {
return false;
}
}
bool date::getDate(int date[],string dateIn) {
string part1,part2,part3;
size_t whereIs,lastFound;
whereIs = dateIn.find("/");
part1 = dateIn.substr(0,whereIs);
lastFound = whereIs + 1;
whereIs = dateIn.find("/",lastFound);
part2 = dateIn.substr(lastFound,whereIs - lastFound);
lastFound = whereIs + 1;
part3 = dateIn.substr(lastFound,4);
stringstream p1(part1);
stringstream p2(part2);
stringstream p3(part3);
if (p1 >> date[0]) {
if (p2>>date[1]) {
return (p3>>date[2]);
} else {
return false;
}
return false;
}
}
bool date::isLeapYear(int year) {
return ((year % 4) == 0);
}
最后,测试程序
#include <iostream>
using std::cout;
using std::endl;
#include "date.h"
int main() {
date d;
cout << "1/1/1988 before 3/5/1990 [" << d.before("1/1/1988","3/5/1990")
<< "]\n1/1/1988 before 1/1/1970 [" << d.before("a/a/1988","1/1/1970")
<<"]\n";
cout << "years between 1/1/1988 and 1/1/1998 ["
<< d.yearsBetween("1/1/1988","1/1/1998") << "]\n";
cout << "is 1/1/1988 valid [" << d.isValid("1/1/1988") << "]\n"
<< "is 2/13/1988 valid [" << d.isValid("2/13/1988") << "]\n"
<< "is 32/12/1988 valid [" << d.isValid("32/12/1988") << "]\n";
cout << "blerg\n";
}
我留下了一些无关的cout语句,我一直在尝试找出错误.
我提前谢谢你.
解决方法
更改：
private:
int days[];
至：
private:
int days[12];
