CODEWITHSUNDEEP
c++
Sophie McKeown-Dillon
Sophie McKeown-Dillon

Reputation: 3

How to assign multiple string variables to a function?

Basically, I want my function stringFeatures to output the size and capacity of variables text, text1 and text2. I'm trying to assign text, text1 and text2 separately to the variable to make the code less confusing but I haven't had any success. How would I go about this? Thank you

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

int main() {
string text = "Banana";
string text1 = "Orange";
string text2 = "Grapes";
string variable = text + text1 + text2;


void stringFeatures (string variable);
{
    cout << "Size: " << variable.size();
    cout << "Capacity: " << variable.capacity();
}

cout << variable << endl;

}

I expect the output to be the size and capacity of each string separately but I don't know how to assign each variable separately, I've just combined all my variables altogether instead as shown in the string variable because I don't know what to do

Upvotes: 0

Views: 1060

Answers (3)

kebbaben
kebbaben

Reputation: 544

Like this?

void MyFunction(string variable) {
    cout << variable.size();
    cout << variable.capacity();
}

int main() {
    string text1 = "Banana";
    string text2 = "Orange";
    string text3 = "Grapes";

    MyFunction(text1);
    MyFunction(text2);
    MyFunction(text3);
}

Upvotes: 1

YouneS
YouneS

Reputation: 390

If I understand correctly, you want to call the function 3 times passing the variable that you want to show its capacity and size. Take a look at the code bellow :

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

void stringFeatures(string variable)
{
    cout << "Size: " << variable.size();
    cout << "Capacity: " << variable.capacity();
}

int main() 
{
    string text = "Banana";
    string text1 = "Orange";
    string text2 = "Grapes";

    stringFeatures(text);
    stringFeatures(text1);
    stringFeatures(text2);  
}

Upvotes: 1

Quentin
Quentin

Reputation: 63174

I have fixed and annotated your code such that it works as you intend:

#include <iostream>
#include <string>

// That's the function's definition (body), it should not be inside another function
void stringFeatures (std::string variable) // <-- no ; in a function definition
{
    std::cout << "Size: " << variable.size();
    std::cout << " Capacity: " << variable.capacity();
    std::cout << "\n"; // Additional newline for clarity
}

int main() {
    std::string text = "Banana";
    std::string text1 = "Orange";
    std::string text2 = "Grapes";

    // Call the function with each string
    stringFeatures(text);
    stringFeatures(text1);
    stringFeatures(text2);
}

Note that I also removed using namespace std;, see this Q&A as to why it's a bad habit.

But it's also interesting to know what was actually happening in your code:

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

int main() {
    string text = "Banana";
    string text1 = "Orange";
    string text2 = "Grapes";
    string variable = text + text1 + text2;

    // This declares a stringFeatures function that is not used at all
    void stringFeatures (string variable);

    // This is completely separate from the function declaration above,
    // which ended at the semicolon.
    // It's a plain code block which only acts on the local variable `variable`.
    {
        cout << "Size: " << variable.size();
        cout << "Capacity: " << variable.capacity();
    }

    cout << variable << endl;
}

Upvotes: 4

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