C++ String find()
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C++ String find()
The find() method searches for a string inside a given string.
Example
C++ Compiler
#include <iostream>
using namespace std;
int main()
{
string str1 = "wikimass for programmers";
string str2 = "for";
cout << "Position of 'for': ";
cout << str1.find(str2);
return 0;
}
Output
Position of 'for': 9
Syntax
str1.find(str2, pos)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| str1 | Required | Specifies a string where the search is performed. |
| str2 | Required | Specifies a string to search for. |
| pos | Optional | Specifies the initial position from where the string search is to begin. Default value of starting position is 0. |
Return Value
| Value | Explanation |
|---|---|
| Number (index value) | Returns the index of the first occurrence of sub-string. |
| Garbage value | If the search value is not found. |
More Examples
In the following example, the search starts from the index value 7
Example
C++ Compiler
#include <iostream>
using namespace std;
int main()
{
string str1 = "wikimass for programmers";
string str2 = "for";
cout << "Position of 'for': ";
cout << str1.find(str2, 7);
return 0;
}
Output
Position of 'for': 9
If the search value is not found, then find() method returns garbage value.
Example
C++ Compiler
#include <iostream>
using namespace std;
int main()
{
string str1 = "wikimass for programmers";
string str2 = "forest";
cout << "Position of 'forest': ";
cout << str1.find(str2);
return 0;
}
Output
Position of 'forest': 18446744073709551615
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