Question

c++

How do I search for a specific string in a word?

For example, when I search for 'pl', I want to return 'true' because 'apple' has a pl.

Answer 1

C++ Program:

#include <iostream>

using namespace std;

//Function that checks whether first string is a substring of another string
bool isSubstring(string str1, string str2)
{
int s1Len = str1.length();
int s2Len = str2.length();
int i, j;

// Iterating over string
for (i = 0; i <= s2Len - s1Len; i++)
{
// Checking pattern
for (j = 0; j < s1Len; j++)
{
//Comparing strings
if (str2[i + j] != str1[j])
break;
}

//Checking length
if (j == s1Len)
return true;
}

return false;
}

int main()
{
isSubstring("pl", "apple")?cout << "True"<< endl:cout<<"False" << endl;
return 0;
}

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Sample Run: