return true if c1 equals c2 (regardless of case), false otherwise : string compare « String « C++

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C++ » String » string compareScreenshots 
return true if c1 equals c2 (regardless of case), false otherwise
  
#include <algorithm>
#include <cctype>
#include <iostream>
#include <string>

using namespace std;

// return true if c1 equals c2 (regardless of case), false otherwise
bool equal_to_insensitivechar c1, char c2 ){
   return tolowerstatic_cast<unsigned char>c1 ) ) == tolowerstatic_cast<unsigned char>c2 ) );
}

int main( )
{
}
  
    
  
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