C programming: How to check whether the input string contains combination of uppercase and lowercase

Question

I\'m totally newbie here. As stated above, I would like to know how to check whether the input string contains combination of uppercase and lowercase. After that print a stateme

Answer 1

#include 
#include 

int main ()
{

  char* str="Test String.\n";
  int Uflag=0;
  int Lflag=0;
  char c;
  for (int i=0; i