by Sai gowtham

How to remove the first character of a string in C++

In this tutorial, we are going to learn about how to remove the first character of a string in C++.

Consider, we have the following string.

string car = "audi";

Now, we want to remove the first character a from the above string.

Removing the first character

To remove the first character of a string, we can use the built-in erase() function by passing the 0,1 as an arguments to it.

Where 0 is the first character index, 1 is the number of characters we need to remove from that index.

Here is an example, that removes the first character a from the following string:

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

int main()
{
    string car = "audi";
    car.erase(0,1); // removes first character
    cout<< car;
    return 0;
}

Output:

"udi"

Note: The erase() function modifies the original string instead of creating a new string.

Similarly, we can also use the substr() function in C++.

Example:

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

int main()
{
    string car = "audi";
    string result = car.substr(1);
    cout<< result;
    return 0;
}

Note: The substr() function returns a new string with the specified characters instead of modifying the original string.

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