(C++) std::isupper

 

std::isupper is an STL function to check if a character is an uppercase alphabetic letter.

 

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

 

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