# find_if_not **Description** : Returns the first element in the range [first, last) that satisfies specific criteria(searches for an element for which predicate q returns *false*). **Example**: ```cpp bool IsOdd (int i) { return ((i%2)==1); } int main(){ std::vector v{ 1, 2, 3, 4, 4, 3, 7, 8, 9, 10 }; if(std::find_if_not(std::begin(v), std::end(v), IsOdd) != std::end(v)){ std::cout <<"\n First Even Value"; } else std::cout<<"No match !!"; return 0; } ``` **[Run Code](https://rextester.com/TZCBJG77851)**