Passing by Value and Passing by Reference using structures in C++

Let us see the C++ program for finding the length of the string by passing values to the function.

We can also pass a structure to a function in two different ways. These two ways are mentioned below;

Passing by Value
Passing by Reference

Passing by Value to the function using structures in C++ (Length of string program)

//Pass by value using structures in C++
#include<iostream>
#include<string.h>
using namespace std;
struct lengthstring
{
	char str[10];
};
int display(struct lengthstring leng)
{
	lengthstring s;
	int len;
	cout<<"please enter your desired string"<<endl;
	cin>>leng.str;
	len=strlen(leng.str);
	cout<<"The length of desired string is:"<<len<<endl;	
}
int main()
{
	struct lengthstring s1;
	display(s1);
return 0;
}

//Pass by value using structures in C++

#include<iostream>

#include<string.h>

using namespace std;

struct lengthstring

{

char str[10];

};

int display(struct lengthstring leng)

{

lengthstring s;

int len;

cout<<"please enter your desired string"<<endl;

cin>>leng.str;

len=strlen(leng.str);

cout<<"The length of desired string is:"<<len<<endl;

}

int main()

{

struct lengthstring s1;

display(s1);

return 0;

}

Output

please enter your desired string

t4tutorials

The length of your desired string is: 11

Passing by Reference to the function using structures in C++ (Length of string program)

//Pass by reference using structures in C++
#include<iostream>
#include<string.h>
using namespace std;
struct lengthstring
{
	char str[10];
};
int display(struct lengthstring *leng)
{
	lengthstring s;
	int len;
	cout<<"please enter string"<<endl;
	cin>>leng->str;
	len=strlen(leng->str);
	cout<<"The length of string is="<<len<<endl;	
}
int main()
{
	struct lengthstring s1;
	display(&s1);
return 0;
}

//Pass by reference using structures in C++

#include<iostream>

#include<string.h>

using namespace std;

struct lengthstring

{

char str[10];

};

int display(struct lengthstring *leng)

{

lengthstring s;

int len;

cout<<"please enter string"<<endl;

cin>>leng->str;

len=strlen(leng->str);

cout<<"The length of string is="<<len<<endl;

}

int main()

{

struct lengthstring s1;

display(&s1);

return 0;

}

Output

please enter your desired string

welcome

The length of your desired string is: 7

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Passing by Value to the function using structures in C++ (Length of string program)

Passing by Reference to the function using structures in C++ (Length of string program)

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