c++ check if string contains substring
string str ("There are two needles in this haystack.");
string str2 ("needle");
if (str.find(str2) != string::npos) {
//.. found.
}c++ check if string contains substring
string str ("There are two needles in this haystack.");
string str2 ("needle");
if (str.find(str2) != string::npos) {
//.. found.
}c++ check substring
if (s1.find(s2) != std::string::npos) {
std::cout << "found!" << '\n';
}how to check substring in string c++
#include<iostream>
#include<ctype.h>
using namespace std;
int main() {
int a = 0;
bool b = 0;
string s, s1; cin >> s >> s1;
for(int i = 0; i < s.length(); i++) {
for(int j = 0; j < s1.length(); j++) {
if(a == s1.length()) b = 1;
if(s[i] == s1[j + a]) {
a++;
break;
}
else {
a = 0;
break;
}
}
}
if(a == s1.length() || b) cout << "YES";
else cout << "NO";
return 0;
}Copyright © 2021 Codeinu
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