(C++) std::islower

 

std::islower is an STL function to check if a character is a lowercase alphabetic letter.

 

• Download the Qt Creator project 'CppIslower' (zip)

 

---

#include <cassert> #include <cctype> int main() {   assert(std::islower('a'));   assert(!std::islower('A'));   assert(!std::islower('1'));   assert(!std::islower('@')); }