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The basic_string c_str function in C++ STL?
The basic_string c_str function that returns a pointer to an array of characters that is terminated using null character. It is an inbuilt method that has the value of a string that has null character termination.
Syntax to define a c_str function in C++ −
const Char ptr* c_str() const
About the function
It is an inbuilt method for the c++ STL library. No parameters can be passed to the method. It returns a char pointer. This pointer points to NULL terminated character array.
Example
#include <bits/stdc++.h>
#include <string>
using namespace std;
int main() {
string s = "I Love Tutorials Point";
int flag = 0;
cout<<"Checking if the string "<<s<<" contains P "<<endl;
for(int i = 0; i < s.size();i++) {
if(s.c_str()[i] == 'P') {
cout<<"The string contains character";
flag = 1;
}
}
if(flag == 0 ) {
cout<<"The string does not contains character";
}
}Output
Checking if the string I Love Tutorials Point contains P The string contains character
Updated on: 04-Oct-2019
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