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#include <iostream>
#include <string>
#include <vector>
using namespace std::string_literals ;
std::vector<std::string> createLine( const std::string & start ) {
std::vector<std::string> line ;
for ( int i = 0 ; i < 8 ; i++ ) {
if ( i % 2 == 0 )
line.push_back( start ) ;
else {
if ( start == "light"s )
line.push_back( "dark"s ) ;
else
line.push_back( "light"s ) ;
}
}
return line ;
}
int main( ) {
std::cout << "Enter the coordinates of a field on a chess board!\n" ;
std::string field ;
std::cin >> field ;
std::string cols {"abcdefgh"} ;
std::string col { field.substr( 0 , 1 ) } ;
int colpos = cols.find( col ) ;
int row { std::stoi( field.substr( 1 , 1 ) ) } ;
std::vector<std::string> baseline { createLine( "dark"s ) } ;
bool result = false ;
if ( row == 1 ) {
result = (baseline[colpos] == "light"s) ;
std::cout << std::boolalpha << result << '\n' ;
}
else {
std::string foot { baseline[ colpos ] } ;
std::vector<std::string> col_line { createLine( foot ) } ;
result = (col_line[ row - 1 ] == "light"s) ;
std::cout << std::boolalpha << result << '\n' ;
}
return 0 ;
}
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