C / C++ / MFC

Quote:

soffice --invisible -convert-to csv excelfilename.xls

#include <iostream>
#include <cstring>
using namespace std;

class st{

	char *p;
	int len;

	public:
		st(){len=0; p=0;}		//creates null string
		st(const char *s);		//creates string from arrays
		st(const st &s);		//copy constructor
		~st(){delete p;}		//destructor

		//+ operator
		friend st operator + (const st &, const st &);

		//<= operator
		friend int operator <= (const st &, const st &);
		friend void show(const st);
};

st :: st(const char *s){
	len = strlen(s);
	p = new char[len+1];
	strcpy(p, s);
	//cout<<p<<"\n\n";
}

st :: st(const st &s){
	len = s.len;
	p = new char[len+1];
	strcpy(p, s.p);
	//cout<<p;
}

//overloading + operator
st operator + (const st &s, const st &t){
	st temp;
	temp.len = s.len + t.len;
	//cout<<temp.len<<" ";
	temp.p = new char[temp.len + 1];

	//cout<<s.p<<" ";
	strcpy(temp.p, s.p);
	//cout<<t.p<<" ";
	strcat(temp.p, t.p);
	//cout<<temp.p<<"\n\n";
	return(temp);
}

//overloading <= operator
int operator <= (const st &s, const st &t){
	int m = strlen(s.p);
	int n = strlen(t.p);

	if(m <= n)	return(1);
	else return(0);
}

void show(const st s){
	cout<<s.p;
}


int main(){
	st s1 = "New ";
	st s2 = "York";
	st s3 = "Delhi";
	//st string1=s1, string2=s2, string3=s1+s3;
	st string1, string2, string3;
	string1 = s1;
	string2 = s2;
	string3 = s3+s1;


	cout<<"\nstring1  =  "; show(string1);
	cout<<"\nstring2  =  "; show(string2);
	cout<<endl;
	cout<<"\nstring3  =  "; show(string3);
	cout<<"\n\n";

	if(string1 <= string2){
		show(string1);	cout<<" smaller than ";	show(string2);
		cout<<endl;
	}else {
		show(string2);	cout<<" smaller than "; show(string2);
		cout<<endl;
	}

	return 0;
}

Quote:

st string1, string2, string3;

Quote:

st string1=s1, string2=s2, string3=s1+s3;