STRING FUNCTION: FIND
size_t find (const string& substring , size_t pos=0 )
This function is used to search a string for a given substring specified in its arguments. If the substring is found, it returns the starting index of the substring else returns -1. The argument pos specifies the position from which the search will begin. The default value of pos is 0.
PROGRAM
// Program to find substring in a given string
#include <iostream>
#include <string>
using namespace std;
int main()
{
string str,sub;
int pos;
cout<<"ENTER STRING: ";
getline(cin,str);
cout<<"ENTER SUBSTRING: ";
cin>>sub;
pos=str.find(sub,0);
if(pos==-1)
{
cout<<"SUBSTRING NOT FOUND !";
}
else
{
cout<<"SUBSTRING FOUND AT POSITION: "<<pos;
}
return 0;
}
OUTPUT
